Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6ebabf6c5d3dc7…

MALICIOUS

PDF

44.0 KB Created: 2020-08-01 13:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ff95b66d24ce8292a148e03ae845f480 SHA-1: 8b7280dd6b55e8a6185c5fbfd0042601537ddf62 SHA-256: 7c6ebabf6c5d3dc71226e9498f0b60165c2972a35881f5a2efc9d2afcf3647fe
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a practice exam, directing users to the malicious URL. The presence of numerous links to external PDFs suggests a link farm or SEO abuse tactic to distribute malicious content.

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=icnd1+practice+exam In PDF document text
    • http://files.donegalfoundation.org/uploads/1/3/2/7/132712369/aa1deda259c67.pdfIn PDF document text
    • http://files.michaelalombardo.com/uploads/1/3/1/4/131406478/4569b1e87e2.pdfIn PDF document text
    • http://files.ptlg.net/uploads/1/3/1/3/131398308/xiwasusijukob.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/1/0433/9505/5777/files/nunopuvugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3073/9106/files/82627051823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/97864740211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7218/4732/files/59725204833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/36303595571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0651/5611/files/serajuwoxekogofasolitok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/wewobijorixagukiwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/95231114522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/the_body_beast_eating_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/nosavovijesumepukupijikim.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 3

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_off00006aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA3 5068 bytes
SHA-256: 56da9c0dd1b44dfe25ff399ed2db8d0be97de193261ee034413f6813a3146c5c
font_01_sfnt_off00007bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD5 11380 bytes
SHA-256: 659e190be651dcd164a4108d582102bb442a6f8c115731f5c29f0c5665e5f142

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