Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f7823d54c1517f…

MALICIOUS

PDF

51.1 KB Created: 2020-08-11 20:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75a2bcefcbea07036bba1bcb05291f0a SHA-1: b68bef5489ad1e954964d7202d250d28ddbb4879 SHA-256: b5f7823d54c1517fd93ac4b261cae6fe2c19982b8fffa62ca4536f29230b9b54
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and references 'mastering javascript design patterns pdf', suggesting a lure to a malicious resource. The presence of a link farm and a malicious redirector indicates a phishing or scam attempt.

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.ru/pify?keyword=mastering+javascript+design+patterns+pdf In PDF document text
    • http://files.rtstringer.com/uploads/1/3/2/7/132741375/9efafd997d695.pdfIn PDF document text
    • http://files.sacredmusicfestival.org.uk/uploads/1/3/1/4/131453294/toliwizulituwo_puwole_fefugikarefoda.pdfIn PDF document text
    • http://files.agathafashion.shop/uploads/1/3/0/9/130969375/9654079.pdfIn PDF document text
    • http://files.haveaseatcolorado.com/uploads/1/3/2/6/132695301/sepinip.pdfIn PDF document text
    • http://files.craigsterritt.com/uploads/1/3/1/3/131380397/8920195.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/1/0430/8549/6482/files/68933972870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3794/0122/files/400_day_clock_repair_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/54196695129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9493/3665/files/61735904320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8782/files/53550169810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/mathematical_modeling_giordano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5931/2800/files/41626313566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/wugugegutemafej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/gta_5_online_hacking_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/automatic_process_control.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A47 5108 bytes
SHA-256: cdeacac18a52273adb4cf7496dceecd963173a7169f5af386fc97d2c3ea88d5d
font_01_sfnt_off00008bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC6 10368 bytes
SHA-256: 094239c0796b078459d9b312658633f04925bb74e29461d097dcd8c4f34f1c7f
font_02_sfnt_off0000af1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF1B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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