Malicious PDF — malware analysis report

Static analysis result for SHA-256 6070894a2686c78e…

MALICIOUS

PDF

66.9 KB Created: 2021-02-21 18:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1fddc8ef263e3c122469d2f686288a72 SHA-1: 481eae8ee162ad0bedb2e99b388542cdbb7a71ca SHA-256: 6070894a2686c78eaeb39f96c0eba7188a63065681778f94262ed442cf160242
136 Risk Score

Malware Insights

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

The PDF document contains a high-confidence heuristic firing for a redirector link, specifically identified as an 'Image lure linking to an SEO redirector (free-download phishing)'. The primary IOC is the URL 'https://maypoin.ru/strik?utm_term=whirlpool+quiet+partner+ii+clean+light+flashing', which is flagged as suspicious. The ML classifier and ClamAV detection further support the malicious nature of this PDF, indicating it's a phishing or trojan delivery mechanism.

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://maypoin.ru/strik?utm_term=whirlpool+quiet+partner+ii+clean+light+flashing PDF link annotation
    • http://onlinetyz.xyz/ignou_b._ed_form_2018_last_dateis3x7.pdfIn PDF document text
    • https://cdn.sqhk.co/tijatabov/hanXgfl/88980192398.pdfIn PDF document text
    • http://artelamp.store/18131659533c0jk.pdfIn PDF document text
    • http://kamini33.ru/kewitomiwevumekitibufe2y6n7.pdfIn PDF document text
    • https://cdn.sqhk.co/rufadexu/icb3rb0/terminator_genisys_future_war_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/FRmiigf/bipopowulojo.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/idoiihc/lejowakow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/widofafane/nilavuvifujilisujoxuw.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/41759535879.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/dividing_fractions_with_same_denominators_worksheets.pdfIn PDF document text
    • http://rowodebifofida.rf.gd/bigivopafegepetepasoz.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/botany_reference_books.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/2290132842.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/can_you_climb_kilimanjaro_without_a_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/handy_stitch_handheld_sewing_machine_review.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/81386664785.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8FE 5416 bytes
SHA-256: d30465472bfbcbb89e295be04da90b0d0793585ecb6231776ebbe9b3a684086c
font_01_sfnt_off0000db73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB73 10204 bytes
SHA-256: 6261678584a5709ddc96139326856015cedaae874366948b96f99cd4a9dfd245

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