Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e88cafcde2a39d…

MALICIOUS

PDF

50.8 KB Created: 2020-08-05 18:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ae33be78015542f256790006ec61ec2 SHA-1: 110d8269aa5255f777594abb1459534f3d05fd8c SHA-256: f2e88cafcde2a39dd3b1e0b25cc2ea81b50e31920e73a9e13ce5650f80143f12
234 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'cerebral palsy physiotherapy treatment' and the malicious URL, suggesting a lure to a scam or phishing page. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=cerebral+palsy+physiotherapy+treatment+pdf In PDF document text
    • http://files.putnamchurch.org/uploads/1/3/1/3/131381640/9666935.pdfIn PDF document text
    • http://files.eleanorpersonaltraining.com/uploads/1/3/2/6/132695543/6535651.pdfIn PDF document text
    • http://motizuviw.keeversboutique.com/uploads/1/3/2/8/132815028/gekekegiguzig.pdfIn PDF document text
    • http://files.riversidecountyheritageassociation.org/uploads/1/3/1/4/131409498/d4e0f0b815.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/1/0433/0120/8232/files/91881872425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/jumosukozutaranafupon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/99023874504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/94276273699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/mololewumifonedanorakig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9295/files/stewart_calculus_early_vectors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/bekasidofak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8060/5077/files/past_tense_and_present_tense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7759/9383/files/60644735306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/fallout_3_character_creation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6588/4313/files/legunigagudoture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/collins_german_english_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0698/3333/files/sibazefonofun.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_off00008902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8902 5428 bytes
SHA-256: 88ba61901e07d2f0f2b3ffb50f27c1e0bb0831eb41d87f89f80d942879fa1c0e
font_01_sfnt_off00009b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B45 10060 bytes
SHA-256: 54ce9723e8a405c48438f303d41a20c1b9a950587b298dd48c3146034fff369d