Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d732f8347edf92…

MALICIOUS

PDF

105.1 KB Created: 2020-08-11 00:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dc581860daeac8800801b987caa8042 SHA-1: 770e0c2e5a1fb09eb0603ab16d76849768a3c01e SHA-256: e7d732f8347edf923c828f16a8a1971856d954ce9e79fe84b4fc2898f5d11b7a
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a link farm designed to manipulate search engine results. One of the embedded links, 'https://ttraff.com/pify?keyword=apoptotic+factors+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to redirect the user to a malicious site.

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.com/pify?keyword=apoptotic+factors+pdf In PDF document text
    • http://files.billmohrart.com/uploads/1/3/1/6/131606745/pudaj.pdfIn PDF document text
    • http://files.susanmateuglass.com/uploads/1/3/0/7/130738894/fonufogexotakiw.pdfIn PDF document text
    • http://files.cafeokawari.com/uploads/1/3/1/3/131384663/vifaf_lalaxel_dokimot_dulavemefolinu.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/1/0430/4021/1105/files/kazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/nenuzojowowiwulumuguxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/rebecca_bloch_accounting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4371/7274/files/tenovabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6703/1200/files/22328834365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/gold_gym_resistance_band.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/nilagekaxojaganizijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3876/1379/files/91518080114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/banelarowitimiwowamapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/35825761920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/1585368481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/jakirizanof.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
🗂 Part of campaign: cafeokawari.com 3 samples

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_off00015bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BBD 5104 bytes
SHA-256: d4a7a0fe8f34ec87ea9e4a31cf598e963ad41869925cf1aa89faa786d174af2b
font_01_sfnt_off00016d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D1C 12476 bytes
SHA-256: 7c5ece6431fd42d73d56533091fbdb22abfb29c2a7179b888b01f38dd1a7c0b3

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