Malicious PDF — malware analysis report

Static analysis result for SHA-256 137dcc1ac4afc7bb…

MALICIOUS

PDF

40.1 KB Created: 2020-08-06 12:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a03a686688a2db520a923bea70f602fb SHA-1: 6c71ace433adb380107eeec5b32f3972453dbe03 SHA-256: 137dcc1ac4afc7bb1fc5afce717b3850d67b95c786f242b1999c0d9624a8e33b
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with link farms and redirectors. The primary redirector URL, https://ttraff.cc/pify?keyword=alkaline+food+recipes+free+pdf, is flagged as malicious. This suggests the document is designed to funnel users to malicious sites, likely for phishing or malware distribution, masquerading as a free PDF download.

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=alkaline+food+recipes+free+pdf In PDF document text
    • http://files.holyangelschicago.com/uploads/1/3/1/4/131412858/votuxudilejorid.pdfIn PDF document text
    • http://files.newmontrocksretail.com/uploads/1/3/1/0/131070561/4d88e3c.pdfIn PDF document text
    • http://files.stormshannon.com/uploads/1/3/1/8/131856317/rabej.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/1/0432/9386/8187/files/tafupapovepulub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/48434321069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/rinaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/gapewid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mejiwevabefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2574/3515/files/dojibikoxewafosaroziboliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7744/1438/files/how_to_add_font_to_illustrator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/fodegabazejazafekujodimel.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_off00005ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED7 5200 bytes
SHA-256: 7dea0029129495f5f9be59bea9ae4ad0cbaea2ae3ee5585e5121d7f57f5481f6
font_01_sfnt_off0000709c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709C 10260 bytes
SHA-256: a686813a4e0b6d1c748e47e882f637a4e347b43a363cbfbc875c57a4bc51139c

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