Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae7c9a14ada439b…

MALICIOUS

PDF

82.2 KB Created: 2021-03-29 07:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 981a1524c7efdf62c4e3f926769f5520 SHA-1: b0a63bceadd3290553ced618f1f56096baa86433 SHA-256: 9ae7c9a14ada439b4d530b3c89e5b925f182f019e6f506c3f66d21ff6616b26b
136 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as phishing. It contains an external URI and an SEO redirector link pointing to 'https://xezojetit.ru/123?utm_term=contoh+report+text+dengan+artinya', which is a strong indicator of a phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of embedded URLs and the overall heuristic firings suggest an attempt to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/123?utm_term=contoh+report+text+dengan+artinya PDF link annotation
    • http://zifirarukax.22web.org/11120034468.pdfIn PDF document text
    • https://cdn.sqhk.co/jagavibejabe/jiWhcjd/98667726486.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosobupis/hbgfZ3w/nocrop_photo_editor_filters_effects_pic_collage.pdfIn PDF document text
    • https://jajelawipazug.weebly.com/uploads/1/3/0/7/130739535/wisiwufiwodoxin_xoraketexupened_xugozusisob_kokinetumufozeb.pdfIn PDF document text
    • https://cdn.sqhk.co/lajoroteb/tjegxGH/jlc_reverso_classic_small_seconds.pdfIn PDF document text
    • https://pagomowe.weebly.com/uploads/1/3/4/6/134608852/vidotumizid.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/iajfShf/1246814592.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/c3aujfq/rareform_blake_tote_review.pdfIn PDF document text
    • https://vokefepafox.weebly.com/uploads/1/3/4/3/134333292/6f1727efedd90.pdfIn PDF document text
    • http://sebemigon.66ghz.com/27266897106.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/gbhcthh/lexazeg.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/FiiFif4/genududunixogatizifokere.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d3fa7bc-842a-499c-87d2-d6cfbefe0438/iso_27001_lead_auditor_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a22d8e6-d289-4312-a1d7-172c42a30d40/how_to_register_an_att_cordless_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce16965-5ceb-4fb2-9a4c-a8cefcac53c7/lusunijonavab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bedb22b-ec63-480a-b2cb-0f9b166c042a/lewibirawanuborafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1f856a9-af32-4e7d-bc0e-1c70ccdd71d6/fuzenuvodamotomijomav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e80d7c7d-062f-4d99-b673-6340bc4f88fc/margot_robbie_wolf_of_wall_street_haircut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4f23bee-f8ad-4cf1-9a79-9a5abf561a0d/fesovuvugulaxaxunube.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001050e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1050E 5084 bytes
SHA-256: d7965771bb419e8bd7054221121dae8759ef034cb300190057a03133546f81b4
font_01_sfnt_off0001165c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1165C 10344 bytes
SHA-256: 360b212de0e1dfc64965ee29f77341f8ddd91d16c7f1a08b362a2340c1a86e5d