Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72f302cbb21278c…

MALICIOUS

PDF

45.5 KB Created: 2020-08-21 01:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98d18c82c6761debe80a75d7a367010a SHA-1: d6f178bcfd6253b712b6907b6592a51479ef44ab SHA-256: c72f302cbb21278c0687dbb23c8a4a9fe4dc80be5ee813a0d8a252f6a3bb0542
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains the same redirector URL. The presence of a PDF link farm heuristic further indicates a malicious intent to distribute links, likely for phishing or malware delivery. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.com/pify?keyword=general+agriculture+pdf In PDF document text
    • http://zadukex.yleniamino.com/uploads/1/3/1/0/131070493/5541454536828.pdfIn PDF document text
    • http://files.yurileving.com/uploads/1/3/1/4/131409127/9621348.pdfIn PDF document text
    • http://files.simplyoakboutique.com/uploads/1/3/0/7/130775171/8916001.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/saxon_algebra_2_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/wow_classic_gnome_engineering_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7461/6472/files/musescore_sheet_music_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/risofafadibux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6504/8214/files/bach_minuet_in_g_major_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/gukiwaripedewiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/chinese_to_english_translate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2188/2776/files/back_off_song_punjabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3967/7861/files/fusionner_des_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/96025194049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/fields_of_social_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/5_styles_of_leadership.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/virgin_cocktail_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/jokutiwav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6366/5055/files/44433326065.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 3

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_off000071b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 5176 bytes
SHA-256: 21ab39e734650ab763bca881d0034c32f3bee1e6badb9c074539a31cd9656409
font_01_sfnt_off00008365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8365 10932 bytes
SHA-256: 70911564c0b35caa5830a08217f1aca4321bcf0ab29b8f638d2beefcb7f4596f

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