Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf361ea5d614e39…

MALICIOUS

PDF

39.9 KB Created: 2020-08-12 14:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dcb4b80a65beb0323015cf2583ca7ae2 SHA-1: c7f3b009c2718ec6ceb4e01bc1c807eb501c9786 SHA-256: 1bf361ea5d614e394256f69c4d36a39fbdf0454192d55a5c1879e3657a1e0b6d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bubble+sheet+pdf+sat'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0431/5391/6053/files/runigaresuteludaw.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to the malicious URL and other Shopify links, suggesting a lure to external content.

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=bubble+sheet+pdf+sat In PDF document text
    • http://files.lilibit.com/uploads/1/3/2/6/132695418/8250372.pdfIn PDF document text
    • http://files.concurrencedesigns.com/uploads/1/3/1/8/131856353/9354118.pdfIn PDF document text
    • http://files.joyful-spirit-church.org/uploads/1/3/2/8/132814680/1585556.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/1/0431/5391/6053/files/runigaresuteludaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/koxuvajave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0509/9675/files/26845415753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/recent_bookmarks_register_log_in_recent_tags.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0487/files/56080760778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/lalux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/biopsychology_pinel_10th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/3986/9339/files/nepatevagab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9380/files/98240863361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/tunuwakemubizonepakugako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/ncert_science_class_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1382/files/da_form_2765_1.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
🗂 Part of campaign: canenationband.com 7 samples

Related samples 4

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_off00005de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE7 5224 bytes
SHA-256: e40a053c3e9c9763bba9a8ac282212b4d630c33ee555f345d558cc4b64560320
font_01_sfnt_off00006f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9F 10600 bytes
SHA-256: 3a9955596205b778d7e7de23b2d07c1dbb706d1eb1a09df41256baddc3c32a09

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