Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9807cbdc02e269…

MALICIOUS

PDF

44.1 KB Created: 2020-08-22 04:27:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a31728aa52c57c496b706de5c0b7d711 SHA-1: 882c73f876e63ba0fb8921f822c8cb91e357efbc SHA-256: 0b9807cbdc02e26922f6d19ba938ff932368b0b1a10171147c17f3773f3adc0b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating an attempt to host a link farm for SEO-based phishing. The primary lure appears to be a 'voter guide', directing users to a malicious redirector URL. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests a phishing or scam 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=idaho+statesman+voter+guide In PDF document text
    • http://files.milestoneco.net/uploads/1/3/0/8/130813841/ribatud-lasaxovu-kojenegobukedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/botisudofeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6463/files/36156277044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2524/files/jemumuwarejinupisutij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5358/8390/files/97667271182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/manumikofamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/61060445062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0564/files/wezuvomuvetomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/41205120085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9291/6886/files/msc_mathematical_physics_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/zivuxavibigagisowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/lagu_abiem_ngesti_rekayasa_cinta.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BA 5084 bytes
SHA-256: 4b221bb16ff86928e38cabb6289154ba4fa6dd48927fa93e32b3df10295eb5b3
font_01_sfnt_off000072e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 10116 bytes
SHA-256: 73bda1a97f094988a7e0396b29815bfe7354dbc2c43e4665bca953df2dc449d2
font_02_sfnt_off00009576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9576 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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