Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bc9b92b608d1d3…

MALICIOUS

PDF

43.0 KB Created: 2020-08-25 13:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4377937a71e52ef9d730742f7eb8703 SHA-1: dbe8375674635f864ede3f42895a7d0054639f20 SHA-256: 88bc9b92b608d1d304b2a07188de0113a0c1e0a0db78f43cd7a845ec9d5e99eb
194 Risk Score

Malware Insights

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

This PDF document contains a link farm and a redirector URL, indicating a phishing or scam attempt. The primary redirector URL, https://ttraff.ru/pify?keyword=thyroid+ultrasound+report+meaning, is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on Shopify, suggesting an attempt to drive traffic to malicious or SEO-spam content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=thyroid+ultrasound+report+meaning In PDF document text
    • http://medimam.virtualhomezone.com/uploads/1/3/1/8/131856543/jivowamego.pdfIn PDF document text
    • http://files.aritonbaptist.org/uploads/1/3/1/4/131483069/tonalisonaxot_towejosulo_guwedozaxufeket.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/1/0429/6173/1743/files/66960523173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2512/1959/files/windows_7_ultimate_product_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/16729857698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/incubus_are_you_in.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/vovuvosolus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2842/1528/files/fezefidakojuvajeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/fizepopusufujavewafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4794/files/95144266367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/botelexoxaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/27006202829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7854/0700/files/river_island_size_guide_dress.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0667/9447/files/21790630914.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8D 5304 bytes
SHA-256: 15029bdc9043514f818ebfd040ddf50e6ae923e4f07b1058fd0f447504042e91
font_01_sfnt_off00006f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 9984 bytes
SHA-256: cf1be7a3d3cbb85c46d70ade9a1fc17af311785a36f2e5f418a56dda599906b7
font_02_sfnt_off00009157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9157 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c