Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa7e0be6b9f536e…

MALICIOUS

PDF

88.0 KB Created: 2021-02-23 08:55:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 4dcaae4cd97f16176f31362db6516c78 SHA-1: 2a8859817ce81a741f0f4f5cea3c09c9690cfbdc SHA-256: faa7e0be6b9f536e76840dbc86c896aa89ef751b55ce151256b3ac939aa90686
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link disguised as a movie title, which is a common lure for phishing or malware distribution. Heuristics indicate the link points to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=vampires+the+turning+full+movie+online+free In PDF document text
    • https://cdn.sqhk.co/dewobube/5CnPfdZ/21868830823.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/ja0yJii/adventure_waterpark_subic_entrance_fee.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/jjX4ihg/2157585.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387241/normal_5ff7c9e5096f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486363/normal_600e0ee98d1fb.pdfIn PDF document text
    • http://kuxogajow.iblogger.org/logoxoxoroximekoxek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388413/normal_5fd345e61bd30.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/FqjjMif/fofujeda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459929/normal_5fde33767a0e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368982/normal_5ffd5325e06cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466675/normal_6006d4448803f.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
    • http://xozelabudizi.epizy.com/79145249165.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/75399657742.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/batman_trilogy_theme_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/70525577814.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/kefupotomigesibo.pdfIn PDF document text
    • http://pudopidurisego.epizy.com/26116690123.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/pagixevusivokadukifi.pdfIn PDF document text
    • http://kibozitasosisan.epizy.com/usmc_scout_sniper_training_manual.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_off00010e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E83 5220 bytes
SHA-256: c00938559e0ec3d6809051fba5c81c0f6f98f42d1491d559299f6bd3fb26df10
font_01_sfnt_off0001202e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1202E 10476 bytes
SHA-256: 8f0636c1e8ddea0cc980134ba507c4f4caa639d0f5f4808e69e8a8a41e11f1c8
font_02_sfnt_off00014410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14410 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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