Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f811776eea1da63…

MALICIOUS

PDF

44.9 KB Created: 2020-08-23 07:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ee3dceb83047d527223ab6b1430bdc0 SHA-1: d7f4bff23fe95ecf752c93f21c8574e52ab88445 SHA-256: 7f811776eea1da63250582a9322f0ad630e56095326da6a8d50d9afff4af7115
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to other PDFs, with the primary redirector URL being associated with malicious activity. The document body, though heavily obfuscated, contains the primary redirector URL and several benign Shopify URLs, suggesting a phishing or scam attempt to lure users into downloading further content. The ML classifier strongly indicated maliciousness.

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=2018+audi+a4+manual+0-+60 In PDF document text
    • http://files.anamcharaministries.org/uploads/1/3/0/7/130739826/taliwenabuwe.pdfIn PDF document text
    • http://toforezek.techtalent.org/uploads/1/3/2/8/132814930/e00fbff55f320f.pdfIn PDF document text
    • http://files.ausdgateway.com/uploads/1/3/1/6/131606502/fowodipe.pdfIn PDF document text
    • http://turiwu.albanyfamilyhistory.org.au/uploads/1/3/1/4/131406082/xodewemila.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/9188196491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/allshare_play_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2200/0029/files/14388641655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4166/8770/files/11693871327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/bawiwolun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/xiviwotofelebotuvidewil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/73015352666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/pasomozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/speak_now_1_teacher_s_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/16124952918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5455/0440/files/carboplatin_smpc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0740/9310/files/14283833080.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6394 4972 bytes
SHA-256: c7bae18adca8d12a29b7e39bcb01096252431131d454edb640f09b78c11fe863
font_01_sfnt_off0000744c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744C 10596 bytes
SHA-256: 80667c245e585080600f7424cf26e4ca668e38e6241dfa015dfff37142ad02d2
font_02_sfnt_off0000989d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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