Malicious PDF — malware analysis report

Static analysis result for SHA-256 3287ad30cbfe4686…

MALICIOUS

PDF

49.9 KB Created: 2020-07-30 22:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75d114c8485eb0abf9e5754256862fac SHA-1: 2ea582d0fc3b67be8acfdf48b0f957f7418dfa3d SHA-256: 3287ad30cbfe4686ae392bae69e56a03be9b16467b28588b98295ac222be8dae
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'learning russian workbook pdf'. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a compromised or malicious site, likely for further exploitation or credential harvesting.

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=learning+russian+workbook+pdf In PDF document text
    • http://files.amanapopcornandicecream.com/uploads/1/3/1/3/131380337/poluferasitafame.pdfIn PDF document text
    • http://files.seattlefirstbaptist.org/uploads/1/3/2/3/132303080/81e42db7c9176.pdfIn PDF document text
    • http://files.rivertonmiddleschool.com/uploads/1/3/2/3/132303024/303207.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/1/0428/9835/8432/files/85947343199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/dodizefap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/54936262316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/87357887483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/xopixijopitujuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5038/2998/files/35661420150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/weroxibakafogupuzati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/24466691126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/60748368982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/zijegisupazepojev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/bajexipefapefinamow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5274/files/66092088595.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8433 5216 bytes
SHA-256: 3c9f7b5c67f3f9648b527b07893ec54c893adf556b45828932782f6c5c47ccc5
font_01_sfnt_off0000960a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960A 11124 bytes
SHA-256: a8aa67dfff626b6e4089cd323a9ff98ba762eb84d6181310e6e3f471f4d36d92

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