Malicious PDF — malware analysis report

Static analysis result for SHA-256 9547eb3d5820b4c2…

MALICIOUS

PDF

160.4 KB Created: 2021-01-24 15:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 0272a5b99e1c82e383b474a6e152963b SHA-1: 895c106424cb6007c01e1edd31814b2f0f393182 SHA-256: 9547eb3d5820b4c26aa871a0882105c0d60671798711c436928ec1b28b6070dc
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of embedded URLs and the redirector link indicate an attempt to lure the user to a malicious site, likely for phishing or to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/123?utm_term=macbeth+play+pdf+with+line+numbers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4490366/normal_5fdfb678a5af7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501975/normal_5fce9049e5c18.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/us_aircraft_carriers_second_world_war9pero.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417992/normal_6008c5186e9f2.pdfIn PDF document text
    • http://dirtygirl.fun/learn_html5_in_24_hourscozcp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374986/normal_5fe2d725d49f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371003/normal_60053ddf0c521.pdfIn PDF document text
    • http://govnosiakxws.online/jukezogobeist7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365662/normal_5ff0e58e2ff3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369769/normal_6007c26b4f1c8.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/nOgihbD/jitojubivuguvejagotet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bisegilupuf/reglage_carburateur_solex_double_corps.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/98934281047.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/ark_survival_evolved_mod_apk_latest_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E2C 5504 bytes
SHA-256: e28cdf3f5a78de7f1a11e040fb88755cf554860a391e81d413d964886ea34a8b
font_01_sfnt_off000240c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x240C1 10760 bytes
SHA-256: 4cb799db0b93fcb61aa03577298cd4e941c695f7b76a361dedb2f57ebb4506d1
font_02_sfnt_off00026553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26553 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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