Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4bbd4bb4d7d4077…

MALICIOUS

PDF

48.8 KB Created: 2020-08-04 09:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f6627aed5c396a9540e25a0fa8cbd055 SHA-1: d0e71ff9773bff5d37e0299a3e8a485f0316ec26 SHA-256: f4bbd4bb4d7d407787873894e50cacaef02434480fe6c165f58257bb6c79c549
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, also contains this malicious URL, suggesting a lure to external content. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content. The ML classifier strongly flagged this PDF as malicious.

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=cours+sur+l+am%25C3%25A9nagement+du+territoire+pdf In PDF document text
    • http://files.relationalintegration.org/uploads/1/3/2/7/132740541/jawit_detaz_joxenuvijola.pdfIn PDF document text
    • http://sitatet.pflumpfunrentals.com/uploads/1/3/2/7/132740214/guzanakujul_dutuxiwujowen_bibumate.pdfIn PDF document text
    • http://files.thebaptistlighthouse.org/uploads/1/3/2/6/132681362/muxav-sudilozewoxel-noketovonub-nabigepaxog.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/1/0437/6428/5598/files/60221788574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8843/6643/files/1017275095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/10445894886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3320/6682/files/37150410469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/47515015572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/puwar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/99628687027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/71878052169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9528/4130/files/zujetixotubebegalad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/nopod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/42835913132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/getting_input_in_python.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 7

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_off00007ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA7 5408 bytes
SHA-256: aa5d8a12882f517725dcc6d53ee58681c7117ebdd7feec17d0765795b9669763
font_01_sfnt_off00008dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAE 12316 bytes
SHA-256: 43baaee77d93943822c7059bcbb0dfaa96ddc851455cda23cfd3d19ec9dbdf99

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