Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c8aaaefef48687a…

MALICIOUS

PDF

35.6 KB Created: 2020-08-10 23:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 782f9e21545daff3a19829e77e4ee568 SHA-1: 8060cf4860db9972dd52864cbe303b1268691c0a SHA-256: 6c8aaaefef48687a0e597eb5330bc05d2cbb2233c2a4b83bd12a216b3b94da6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body and heuristics indicate a link farm designed to trick users into downloading PDFs, likely as a phishing or malware distribution lure. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=il+canzoniere+della+musica+italiana.+pdf In PDF document text
    • http://files.sthomaskensaltown.co.uk/uploads/1/3/1/3/131383837/jofifina-vumiwaxu-pavapimik-kidexebuborelor.pdfIn PDF document text
    • http://files.multiaxis.llc/uploads/1/3/2/6/132682171/9616310.pdfIn PDF document text
    • http://files.bhi5.com/uploads/1/3/0/7/130739480/joneniwapo.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/1/0430/6662/2101/files/47347767256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9127/1586/files/fundamental_accounting_principles_20th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4107173541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/boxuguxazozofokadegofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/85727801645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/53955244769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3918/5303/files/watapilovoxujix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2269/7126/files/dogemapalefetoxilazerajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4819/6513/files/kannada_bigg_boss_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/rogudexopixifuvitipoledeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/sedazaxoluzibibaxadop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/majusotogozarow.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_off00004c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C64 5320 bytes
SHA-256: ef5d3b2e195b178519300c5f17cfcf60aa0408c23d967ffccef3b9013f116705
font_01_sfnt_off00005e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5F 10684 bytes
SHA-256: 61e99409b3f30b7a1d7268f12fee041561ce25a009f3cab5c5d70f64226b6807

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