Malicious PDF — malware analysis report

Static analysis result for SHA-256 753f62ff358e2075…

MALICIOUS

PDF

74.1 KB Created: 2020-08-11 07:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5e5cf15120abd3b068a1b02a4b56765 SHA-1: a3f11b1f237c88b611168ecb80cedcd9ab5fb87d SHA-256: 753f62ff358e207537d0f7c0ad94e339166b72db0e7f9262900349ca4eac7862
234 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body itself contains obfuscated text and references to URLs that appear to be part of an SEO link farm designed to lure victims into downloading further malicious content or engaging in phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=metabolomics+applications+pdf In PDF document text
    • http://files.pierpontchurch.com/uploads/1/3/0/7/130739970/4673029.pdfIn PDF document text
    • http://jivunekid.spcwaterdistrict.com/uploads/1/3/1/6/131606248/5738724.pdfIn PDF document text
    • http://sokode.lacindra.com/uploads/1/3/1/4/131407089/0ab7c94494348.pdfIn PDF document text
    • http://files.therandytravisfoundation.org/uploads/1/3/1/0/131070688/soterava.pdfIn PDF document text
    • http://files.elitegolfcartrentals.com/uploads/1/3/0/7/130739991/35bc77b74347ae.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/1/0431/6574/5309/files/electronics_projects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4313/4362/files/payroll_tax_act_nsw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8628/0872/files/tomonaxegopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1565/9942/files/nfl_week_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/67768810610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4000/4501/files/xupawoxuveg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/35171593562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/zudamowonod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/mafofasaxosugegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/artemia_franciscana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/gunavakud.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F3 5348 bytes
SHA-256: d372f654ccbfe4a8bd8e13c3cc91bf9f05fd3ed51430e6f1a3bfbaa3e19ffb17
font_01_sfnt_off0000f314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF314 11928 bytes
SHA-256: b556367784a4b074f834e5118a671518ea0709b9158adc9f17eb35509d8ad9ab