Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b95f4a062d9d2cb…

MALICIOUS

PDF

43.0 KB Created: 2020-08-04 11:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14acd5bb5a7ad3ffc818f5bfe4687309 SHA-1: 78db2e265b1cb1e919322337e1bfed09b756e86c SHA-256: 8b95f4a062d9d2cba820bdcdf5361bd3d22ccd4c69b53be0f48944b54cf0c3a7
194 Risk Score

Malware Insights

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

The PDF document contains a link disguised as a free download for aptitude questions. This link, however, redirects to a malicious URL (ttraff.cc) which is flagged as a known malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, likely for SEO manipulation or to host further malicious content. 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=aptitude+questions+and+answers+with+explanation+pdf+free+download In PDF document text
    • http://files.winonachurchofchrist.org/uploads/1/3/1/3/131398204/renuzatuseg-pareta-ruboruwi.pdfIn PDF document text
    • http://files.sharonharveyphotography.com/uploads/1/3/0/7/130776164/vogatevuber-warozovi-mipebi.pdfIn PDF document text
    • http://files.crownedenergyvibes.com/uploads/1/3/1/4/131406736/2011688.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/1/0433/3607/3366/files/moguzovamalawilimogejijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/anesthsie_pridurale_technique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/1052432088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2022/2627/files/joxawesunulimujefolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2880/6806/files/mokalalenigugimim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/wifuburixonidalonupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2952/6688/files/38200144100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/1600cc_vw_engines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/pobipavopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7835/2034/files/apollonia_saintclair.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B7 5404 bytes
SHA-256: b4fb16a0ff2d85c8a92390e5b0d9ed514a1f5a133af247a3f61bfb30814b2ae4
font_01_sfnt_off00007c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2F 10152 bytes
SHA-256: 6e64ec09d42d069b634fbf76f58140a206a941fc01afee261bc3ae2dc684ac19

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