Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ef867861fa06f6…

MALICIOUS

PDF

33.6 KB Created: 2020-08-01 05:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b055e86f3f0507a699d746f1d2f91759 SHA-1: a1a52035cc97cc37652cae43ba8a67ecaddc4ffd SHA-256: 62ef867861fa06f62680860215122bde7d5a4da19dcd3a5ac2255d7f9a4a1f93
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users to malicious content. The presence of a link farm and a malicious redirector indicates a likely phishing or malware distribution campaign.

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=comfort+pro+apu In PDF document text
    • http://files.palmettoartsed.org/uploads/1/3/1/4/131452949/6319247.pdfIn PDF document text
    • http://files.youthkings.net/uploads/1/3/2/6/132681295/f370d97c51d89c.pdfIn PDF document text
    • http://files.rebeccagoldberg.net/uploads/1/3/0/8/130874598/5e86891d2f.pdfIn PDF document text
    • http://files.yomommasapronstrings.com/uploads/1/3/0/8/130814110/zitorol_bipolus.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/1/0430/2936/4885/files/51587268808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6591/5045/files/jojoboxuvupusino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3771/0744/files/36424479845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kafojisiguzisov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/maniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/65909986785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/lumivakoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/badowujopifediwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/6137631973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/jajotovutojijuzibofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/gibepunovibuxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3016/8230/files/53332630063.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_off00004718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4718 4744 bytes
SHA-256: dd9c5e7952b33de7b24c77ea02fee908dcb6253e92511da59b67e380ec9142b1
font_01_sfnt_off0000571f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571F 9816 bytes
SHA-256: d4f1e37de7b74d3df3bab28dbcd24befce37312cac215d53b2515b7d338d7c50

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