Malicious PDF — malware analysis report

Static analysis result for SHA-256 81d1b7f23ba9af99…

MALICIOUS

PDF

38.3 KB Created: 2020-08-21 02:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7929ebce6b6ff8c2385cf694e7c53c5c SHA-1: ac007439178228804d3e8fcc93886d1d19ca7f49 SHA-256: 81d1b7f23ba9af99dd0b3fd913568e9956f50fb7c8feeff6a96f6da2b0808045
194 Risk Score

Malware Insights

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

The PDF contains multiple links, including one that redirects to a known malicious URL, suggesting a phishing or scam attempt. The document body and embedded links are designed to lure the user into clicking through to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to drive traffic to a malicious site.

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=ladies+in+lavender+sheet+music+cello In PDF document text
    • http://files.earforlanguage.com/uploads/1/3/1/4/131406977/jizagojosesibev.pdfIn PDF document text
    • http://files.attentivesafety.com/uploads/1/3/1/4/131408056/lamidilipukatuborasa.pdfIn PDF document text
    • http://files.laurawritingcoach.com/uploads/1/3/2/8/132814463/1498812.pdfIn PDF document text
    • http://files.jimsv8vair.net/uploads/1/3/1/4/131438313/bonijolosu.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/1/0430/5816/7959/files/84697093743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/vajasekevevosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/12673439574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9675/2534/files/87716919347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8984/9509/files/big_data_analytics_made_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/jewatifini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1195/files/vomuzomogopojikunez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/jasajuraziwo.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_off00004aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEC 5064 bytes
SHA-256: 2367915ee5a11e52d4f6536fe21cfdac69bde735e23940d1ae46e909b11d7706
font_01_sfnt_off00005bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEA 10088 bytes
SHA-256: 588c5837daf8f21439db7ac023b8ac2207b14475b1c022533f164bb224a412b6
font_02_sfnt_off00007e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E64 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.