Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5ac4bf5f45ca80…

MALICIOUS

PDF

46.2 KB Created: 2020-08-11 20:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 974c266688657716aa463d6c2741408e SHA-1: 343f2f5b2ae7633bf36a1913c67f752bfe36c00d SHA-256: 0d5ac4bf5f45ca809a220a408d60fdfcb64b6c41c604c61f51f2e5ba61e08a06
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous PDF links suggests an attempt to create a link farm or distribute further malicious content, aligning with phishing or malware delivery tactics.

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=atomic+number+and+atomic+mass+list+pdf In PDF document text
    • http://vovufe.hautepaws.com/uploads/1/3/0/8/130813095/30659.pdfIn PDF document text
    • http://files.sunsetlakeorganics.com/uploads/1/3/0/7/130738943/lujoliw-gotewerajusexix-fatagotozi-pamolasobaj.pdfIn PDF document text
    • http://files.westhawthornuniting.org/uploads/1/3/0/8/130813042/bumubikikivudan.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/1/0428/5048/4390/files/rational_choice_theory_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8576/5533/files/sistem_budaya_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/gobunos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/86045872464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/57871121562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/kosimagewidadaxupebeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/4845419586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2641/5779/files/american_standard_heritage_12_heat_pump_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/94652315434.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00006075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6075 5432 bytes
SHA-256: 70e4861794603fadef22cb27ea3eca9126b3919972805179264f139ef7ceae64
font_01_sfnt_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 10540 bytes
SHA-256: 0d63d752fcc0e38b0935142c7eee41093edbb3295b7e18f58f70b6621da14717
font_02_sfnt_off000096a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A0 16204 bytes
SHA-256: f04fb96856fa86c99babb5bf309615b780632e07d2318923ed038a7bfd4fd4ce

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