Malicious PDF — malware analysis report

Static analysis result for SHA-256 2227b49bf4f287e1…

MALICIOUS

PDF

353.3 KB Created: 2021-03-14 02:50:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0b26167e7f10d3744aae890eba565562 SHA-1: b33a05a7d4b5c52f76156af2226d55ed1c710f07 SHA-256: 2227b49bf4f287e145af41d15d5fb07fdb777ca9a86d46bca9f2c2f017bfd9de
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a high-severity heuristic firing indicating an image lure linking to an SEO redirector, identified as a free-download phishing attempt. The primary external URI and redirector points to 'https://druttle.ru/wix?keyword=pishaj+meaning+in+hindi'. While no scripts were explicitly extracted, the PDF structure and the nature of the redirector suggest an attempt to lure users to a malicious site, likely for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7804

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/wix?keyword=pishaj+meaning+in+hindi PDF link annotation
    • https://cdn.sqhk.co/jomububorava/hgjhuhx/khleo_thomas_filmography.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472188/normal_6008eac11c81d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405654/normal_60293d3cec846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424025/normal_60367833b9d76.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/Chf1jbq/10305556739.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/igUmiim/53983087900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_603f77f713143.pdfIn PDF document text
    • https://cdn.sqhk.co/dizukenepu/Qhiqiia/vujewime.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/WEjiihL/dama_game_online_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377414/normal_600bcfc45bbff.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sedowedi/botig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/568b26e7-a0b9-48fe-831f-9e71cb80d79e/the_official_phreakers_manual.pdfIn PDF document text
    • https://77bac38d-831a-46d6-8f22-d7743fcadc58.filesusr.com/ugd/5b9a87_a9fcd69375f44a65b668d32d0cfa9e65.pdf?index=trueIn PDF document text
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_30a0554c5542404492b4644747985851.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2afc58c1-7bce-4357-a7a8-2fa500e327b9/lakebenubomopeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7eb3b21-4b6f-4846-be5b-b74cf2e300fc/rotikugi.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/bronze_anodised_aluminium_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/martin_lewis_ppi_complaint_letter_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5872bb27-4b83-4451-af99-237d59ea4b2d/how_do_i_redeem_v_bucks_on_switch.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/79852489521.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/cover_letter_template_job_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/70083705412.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/summer_training_report_format_for_mechanical_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/briggs_and_stratton_vanguard_14_hp_v_twin_carburetor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/755f0ca8-14f8-434a-9392-7f7a70605bd4/black_baby_girl_shoes_3-6_months.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00051675.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51675 29712 bytes
SHA-256: e1e7db4a1781c6948a259df35712d9a5ca420600bcf5c5309b0091fe7f97ab0d
font_00_sfnt_off0004ac14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC14 6456 bytes
SHA-256: aa913ec4b87b788ecf51a39a03b1dc1a03ad9eeab1a1bf7513daec6047b9e738
font_01_sfnt_off0004c1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1A7 5188 bytes
SHA-256: 3c14da2d926b441732c1cf8d855405f0a38fd4dda25ce9c1963140d50c8a461c
font_02_sfnt_off0004d32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D32A 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_03_sfnt_off0004de8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DE8E 19776 bytes
SHA-256: df897a8fa9debb028e0a79de226274824c106466063330e0c9c680d5c2b11250
font_05_sfnt_off00056430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56430 6112 bytes
SHA-256: e267c248b2ce7d27eaa74a59b52ce6f4972f93190f10c30d49c64bd6f7ff2e94

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