Malicious PDF — malware analysis report

Static analysis result for SHA-256 8835e4c91f8fd3a8…

MALICIOUS

PDF

68.4 KB Created: 2020-08-06 01:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9f54eeb9dc1eb3f4674ba1e64305196 SHA-1: d8d8a9f4a49afa59cc4f0d396ebe863d0c4abb17 SHA-256: 8835e4c91f8fd3a806ab679fbbf25bbce2752cec6e5252d728882f7fec010038
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs, many of which are hosted on redirector domains. The primary redirector URL, https://ttraff.cc/pify?keyword=muscle+hypertrophy+workout+pdf, is identified as malicious. This suggests a phishing or scam campaign aiming to direct users to potentially harmful content. No scripts were extracted, but the presence of embedded URLs and the heuristic firings strongly indicate a malicious redirector pattern.

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=muscle+hypertrophy+workout+pdf In PDF document text
    • http://rafoto.thegreenhouseac.com/uploads/1/3/0/7/130776611/dilelidi.pdfIn PDF document text
    • http://files.protectthegame.com/uploads/1/3/2/8/132814958/63b927.pdfIn PDF document text
    • http://files.silas-house.com/uploads/1/3/1/3/131380728/0a293b781.pdfIn PDF document text
    • http://files.tailoredtrainingnarberth.com/uploads/1/3/0/7/130739204/mofivedopize.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/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7291/3557/files/valsartan_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/ponuxoxagulufotuxito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/maruvitumiselaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/saridufen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/tuzizomem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/67201406019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/tomosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0587/8173/files/baloncesto_en_silla_de_ruedas_reglamento.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 8

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_off0000c085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC085 5024 bytes
SHA-256: 9cfb8aefeee7e70ab7c22f8c880f317e8ee5f63425308f97a5c35f3a115c9819
font_01_sfnt_off0000d1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D6 10928 bytes
SHA-256: 93f93c3958e93f421c867c57255eb27b68ed30bcc501f90a8cb9c52d21b04fcf
font_02_sfnt_off0000f668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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