Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c138038990ebeb…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 16:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1b451aa455a435dbcd27f43b41581f9 SHA-1: 86dbd2bff15038d1f91ebba160fb2403ef610574 SHA-256: 49c138038990ebebed4382f352dfdd3f9d384569ebb8d4e8a70e6abb0454d309
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and contains a large number of embedded links. One of these links, https://ttraff.ru/pify?keyword=the+buganda+agreement+1900+pdf, points to a known malicious redirector. The document appears to be a link farm designed to distribute malicious content or phish users.

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=the+buganda+agreement+1900+pdf In PDF document text
    • http://files.srflasvegas.org/uploads/1/3/1/4/131438418/5166391.pdfIn PDF document text
    • http://files.transnationaleuropeanstudies.org/uploads/1/3/0/7/130740563/3b5ebea.pdfIn PDF document text
    • http://mimef.yuanmodellinggroup.com/uploads/1/3/1/3/131379179/ecd3059712d4c.pdfIn PDF document text
    • http://zizag.octobermoon.shop/uploads/1/3/1/8/131871740/zesipirurixixorute.pdfIn PDF document text
    • http://files.okasparagus.com/uploads/1/3/2/7/132712315/mogazepodixabo.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/1/0431/3251/8549/files/64939584184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/ziredulizedopuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/fuwewodilujabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesuwalaloluxafim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/big_caslon_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8515/9843/files/ruromeworegatubogiwulese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/xitusosul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/evidence_of_evolution_lab_answers_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/wufutesogod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7044/5975/files/assembler_deux_mac.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 6

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_off000064fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FE 5684 bytes
SHA-256: 57b610e49a6fddd19eb7975b0d0277358f3a438cbbb96c864370867f1c741505
font_01_sfnt_off00007823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7823 9908 bytes
SHA-256: f86371768b24b18bdd38ddaad8979f6da6afba43234570b8166f5f22ca6d3bd7

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