Malicious PDF — malware analysis report

Static analysis result for SHA-256 562f8e6bc569fcdc…

MALICIOUS

PDF

44.4 KB Created: 2020-07-29 21:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7b62d331e866cdb78609358c877326e SHA-1: 5cd562069929b6df926a98f3df8950ce1b5531bc SHA-256: 562f8e6bc569fcdc898b4e61c6ec5bd580265c92b96db1e2c2745b8e8bb50736
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure for a free PDF download. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm strategy to obscure the malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=libro+usar+el+cerebro+pdf+gratis In PDF document text
    • http://files.florenceecarol.com/uploads/1/3/2/6/132695668/24e6781791c4af.pdfIn PDF document text
    • http://files.sid1.org/uploads/1/3/1/6/131606069/domakorapoz_karefox_senuvexuxagaki.pdfIn PDF document text
    • http://files.neyensequence.com/uploads/1/3/1/3/131398452/tetoderemaxed_liwewuwidul.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/1/0427/5650/5756/files/nisekidapoluvodufetewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/92024855789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7741/0724/files/70020579126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/56778994585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/96170092440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4954/7936/files/lixogegepemolebavug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/31562659870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/76843566366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/xeleg.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_off00006be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE5 5180 bytes
SHA-256: 6bc58f11352418df4b70f343512cfca564cb124a24ffeee8d2780b7ae29cf10a
font_01_sfnt_off00007d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D93 11552 bytes
SHA-256: 0de9520c8ad4fd301c47a8f2ddda4f952ad326d048390dd51cbbba3c58ffd07a

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