Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd9b3591508901b…

MALICIOUS

PDF

45.1 KB Created: 2020-08-05 05:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5d4ea912e7b850b980d54fe756b9e91 SHA-1: a5ff348b59b636b71d2500bd5169928ce0267b31 SHA-256: 0bd9b3591508901bc5a2667bbc8ee9d9dc78175502184a5315a746cb21fb26dc
194 Risk Score

Malware Insights

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

The PDF contains a large number of links to external PDF files, many of which are hosted on Shopify and appear to be part of an SEO link farm. The primary redirector URL, 'https://ttraff.cc/pify?keyword=addition+of+dissimilar+fractions+worksheet+pdf', is flagged as malicious. This suggests the document is used to drive traffic to malicious or spam content, likely for phishing or ad revenue generation.

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=addition+of+dissimilar+fractions+worksheet+pdf In PDF document text
    • http://files.miniaturecupcakes.com/uploads/1/3/2/6/132695575/5509567.pdfIn PDF document text
    • http://files.aspirerta.org/uploads/1/3/1/3/131380889/pinevepodepe_rogibazemuvi.pdfIn PDF document text
    • http://jirew.3queenspublish.com/uploads/1/3/1/8/131871699/podimusofut.pdfIn PDF document text
    • http://files.mastersofmasternodes.com/uploads/1/3/0/9/130968995/lamuxodizosilufumum.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/1/0431/6299/2801/files/27127525093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4736/1439/files/classic_stories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/dasivixamujawobirisorane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6851/3695/files/diborazuravibibiruwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/zajan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/91516183026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/sullivan_algebra_and_trig_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/tedetitimikexitur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6146/1670/files/57325935279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/63248853665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/96708075710.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 5

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_off000072c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C2 5540 bytes
SHA-256: 5a527da2048a4f8b6addb881715118323a3dcd7fe1ce7df83c9b0fb0bd925e4d
font_01_sfnt_off00008583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8583 9836 bytes
SHA-256: c9c82cb06e6344a7f75a5da5e800b1e87c00d658a08124c9c94d1b74b0f0927a

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