Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab8636b971a201c…

MALICIOUS

PDF

73.1 KB Created: 2020-08-10 13:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8dce4b8ee7e546d4ae87b47dfc936b3 SHA-1: 0c537746dad5f0044b164fa4a32df9220ddd45bb SHA-256: 0ab8636b971a201c66fab02c350479625e0d756adc4a466f0f22ec764d2dfc1e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=diba+barzanji+pdf'. This suggests the document is part of a phishing or malware distribution campaign, likely using a spearphishing attachment as the initial access vector. The presence of numerous external PDF links further supports the SEO link farm tactic.

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=diba+barzanji+pdf In PDF document text
    • http://files.ccla-ct.org/uploads/1/3/2/6/132681901/rejil.pdfIn PDF document text
    • http://files.elizabethwoodrum.com/uploads/1/3/1/4/131453522/folobajosejurasasa.pdfIn PDF document text
    • http://files.liferestorationpartners.com/uploads/1/3/2/7/132741385/zogugapuwepopejosogo.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/1/0439/4015/1454/files/73376800272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/pogiwomukijeninamefogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/89271390780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8376/5662/files/lipid_rafts_as_a_membrane_organizing_principle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/54301612639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7847/files/dezunulitunuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/bombay_high_court_shortlist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1790/7874/files/sarah_s_scribbles_adulthood_is_a_myth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/degezirofaxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/suzif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/33714601273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6556/files/algorithmic_trading.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/how_to_uninstall_java_mac.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000df7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDF7D 31264 bytes
SHA-256: 3cfa6fe27879ff3d14c910e9e3bec7c5c94adcd901aca18411c8270769efbe84
font_00_sfnt_off0000ab32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB32 5092 bytes
SHA-256: 713d20e2795aee5e9e88f6319870d943b63d01026286d6fe5fc0bcd201f6f7d5
font_01_sfnt_off0000bc9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9B 10120 bytes
SHA-256: 772220e3de8264a144dd80fe5db88af631d342d875ae87207abb18632c193c43