Malicious PDF — malware analysis report

Static analysis result for SHA-256 687fdccde01f79fb…

MALICIOUS

PDF

46.7 KB Created: 2020-07-30 10:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6cdda2073ff30b2941f960ea65d8776 SHA-1: 64ff10a501959bd70add0eb5748a0b55ebae34e2 SHA-256: 687fdccde01f79fb61b62feee524c97592628c156744090e3da32c86f88e1e2a
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed to distribute more malicious content. The primary redirector URL, 'https://ttraff.cc/pify?keyword=argumentos+contra+a+pena+de+morte+pdf', is used to lure victims into downloading further malicious PDFs. The ML classifier strongly indicates maliciousness.

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=argumentos+contra+a+pena+de+morte+pdf In PDF document text
    • http://files.mrssheltonfacs.org/uploads/1/3/1/3/131380944/tuzegazebajavawejup.pdfIn PDF document text
    • http://files.resourcefulindonesian.com/uploads/1/3/1/4/131437563/weziw-xerufase-makubafurogomo-tejizitaw.pdfIn PDF document text
    • http://files.warmnightcandles.com/uploads/1/3/1/4/131454304/wixarefobu.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/1/0428/2476/1507/files/531254491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/lowatotapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9285/9293/files/lidepodafujej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/42564103459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/simem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/88631562089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/murugokidarerileludi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2891/2040/files/repix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8286/5047/files/25627541078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/11040436203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/tofuwet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4853/2128/files/81684438257.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 5

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_off0000752c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752C 5264 bytes
SHA-256: 1ddd4bf3af031c8d6e5e252d43b15b696994e94fd4d51b5926e26b3e2f07bae1
font_01_sfnt_off000086f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F3 12252 bytes
SHA-256: 774de12a4050830c0ae8be18565a2fcf06f8e8846771e3b409704bbeb5d6858e

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