Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0211ee646f76053…

MALICIOUS

PDF

75.5 KB Created: 2021-02-05 06:56:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b3266bd8a9df07e1cadfe118b62c41cd SHA-1: 95bb90f7cff14cbc331389806cc7004cd33e8477 SHA-256: a0211ee646f76053b83d41e90fd7aae91623c2244b5581ab7f37df2089c174d2
196 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document body and extracted URLs indicate a lure for 'Grand Theft Auto free for Android', directing users to SEO redirector links. The presence of numerous external PDF links suggests a link farm intended to drive traffic to malicious or unwanted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/aws?utm_term=grand+theft+auto+free++for+android PDF link annotation
    • https://tefajakitom.weebly.com/uploads/1/3/1/3/131378990/bozolusoga-migeguzesaz.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/heNlWjg/sinnoh_steel_type_pokemon_go_list.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/hiDgMSP/unlimited_coin_ludo_king_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/kxxthb6/galaxy_of_pen_and_paper_wikipedia.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/hhhdgc9/tsuki_adventure_yukiyama_climb.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/thfdvjd/laropoxetutozubin.pdfIn PDF document text
    • https://cdn.sqhk.co/mapezagul/jdtibgf/98687656028.pdfIn PDF document text
    • https://zejenabo.weebly.com/uploads/1/3/0/9/130969472/sofoxijid_kogobilus.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/iNoYzLV/69285202803.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/22025.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/NUghjqG/flick_kick_football_legends_1._9_85_mod.pdfIn PDF document text
    • https://dulifemubal.weebly.com/uploads/1/3/1/3/131398350/vinowada.pdfIn PDF document text
    • https://dubuvolikumo.weebly.com/uploads/1/3/4/0/134012832/xakunevuda-rijurafinuka-wesomadipugik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rerivumisiso.rf.gd/jagemesapifavitajiruw.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_off0000ed0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0A 4816 bytes
SHA-256: 1a8c8196706d5edc0e8e7a2a76f6b4d72527e748b1f5a0a1203f27eb48156106
font_01_sfnt_off0000fd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD66 10396 bytes
SHA-256: 1a4c464d77db8d137a18f8d6812aa2992205fec73f6f444c1d1a149d2426e24e

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