Malicious PDF — malware analysis report

Static analysis result for SHA-256 667e77ed8991ea4d…

MALICIOUS

PDF

66.1 KB Created: 2020-08-04 13:33:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cb585c6e2676d2aa2352b9a20438516 SHA-1: 319cbf2e43d119fa2fc95bc6389e943761475100 SHA-256: 667e77ed8991ea4dc6e523cb38a29faf4037fc884c10e8040b3b996ed9ede04a
194 Risk Score

Malware Insights

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

The PDF contains numerous links to a redirector service, identified as a malicious link farm and SEO lure. The primary redirector URL, https://ttraff.ru/pify?keyword=introduction+to+entrepreneurship+books+pdf, is flagged as malicious. This suggests the document is designed to drive traffic to malicious infrastructure, likely for phishing or malware distribution, disguised as a free book download.

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.ru/pify?keyword=introduction+to+entrepreneurship+books+pdf In PDF document text
    • http://files.raingirlphotos.com/uploads/1/3/1/4/131437930/782cc0.pdfIn PDF document text
    • http://files.lightoftheworldbrigade.org/uploads/1/3/0/7/130775249/betevanawavogi.pdfIn PDF document text
    • http://files.next-mex.com/uploads/1/3/2/6/132696111/rusowumado-pojisiwola-zamifadedos.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/1/0432/4317/6091/files/abraham_twerski_kitaplar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/36952353696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/setagetuvuzanowil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/42961945730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13164506765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/19932973561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3813/8783/files/aircraft_design_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/45981353590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/14204220827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3528/2856/files/vanilla_wow_stockades_quests.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 5

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_off0000c66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC66C 5140 bytes
SHA-256: 3032890bb308650118fcb08dcf4c04f803746280bf91117e939ea0932304aa7f
font_01_sfnt_off0000d7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DF 10356 bytes
SHA-256: 414f9bdd4ec2336f7e52a05353b5373af91d52eb94125a581b4e07a340513031

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