Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6c102d4a918dcb…

MALICIOUS

PDF

39.2 KB Created: 2020-08-04 13:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7dbe54db9333d5a93309ecf1d4f932a SHA-1: d6df8bfe6a07350d5799568ef24232b993ee22b3 SHA-256: db6c102d4a918dcbc0ad593928f0c9dd6ba5d2723faddcc84df6a2b928865eb1
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to manipulate search engine results, with a primary link redirecting to a known malicious domain. The document body is obfuscated but contains the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection attempt.

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=concepto+de+anualidades+en+matematica+financiera+pdf In PDF document text
    • http://files.epeterswriting.com/uploads/1/3/0/7/130740596/xakifuguwa_devowi.pdfIn PDF document text
    • http://files.rumble-records.com/uploads/1/3/0/7/130739470/5886846.pdfIn PDF document text
    • http://pogup.swisscompleteeyecare.com/uploads/1/3/1/4/131407558/1631429.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/1/0431/0702/5056/files/nejenosajulow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3869/3797/files/vufisidigimogikironi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/wamekaferebadorobiwuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6265/7177/files/vufetapezabunatetalol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8022/0826/files/wodesiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2322/0392/files/mendelssohn_violin_concerto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/35388517113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwofejimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5792/9622/files/virutikonubufofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/nezarejakami.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: swisscompleteeyecare.com 3 samples

Related samples 2

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Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000569e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x569E 5208 bytes
SHA-256: 29293ea57d35fd31e9fe16626a0a90e3a55c6075df5aaa1da9d48ebf4b786965
font_01_sfnt_off0000683b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683B 11644 bytes
SHA-256: 81989c8827df9b4958c3823127ed01192e45bd6a43a3f9cc5b4c685bd7fe6f42

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