Malicious PDF — malware analysis report

Static analysis result for SHA-256 88195773dba72bea…

MALICIOUS

PDF

47.0 KB Created: 2020-08-22 19:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f1be440f170fd04cb84138d80170e97 SHA-1: f7a416f73b6f2e4e36d5940e7ad85ab327e4f166 SHA-256: 88195773dba72beafcb3eed85219bda60b250580b64af8c53ab67f80ae7efc6d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary malicious URL identified is a redirector that appears to be part of an SEO scam, attempting to trick users into downloading potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs supports this assessment.

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=photo+search+free In PDF document text
    • http://files.metroartdesign.com/uploads/1/3/0/8/130813111/4567cc9c9ad6.pdfIn PDF document text
    • http://files.re-bel.org/uploads/1/3/1/4/131410545/8133550.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/1/0435/3461/4688/files/bebubinofovitibik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/nuzekofepububasobiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/small_catering_business_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/60468607882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3676/9447/files/elves_bowling_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0297/6666/files/vobasusefenolekan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9467/0498/files/2596461396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5026/files/4937071425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/jukixixamalajon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6302/5559/files/android_studio_setting_gradle_path.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/attagasam_full_movie_hd_tamilrockers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/la_intimidad_publica_beatriz_sarlo.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_off00006ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB6 3524 bytes
SHA-256: 10c71a909b49d141d2dcf6f6f292ee08cb0fb5759944312552403e594387c5ce
font_01_sfnt_off0000776d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776D 4940 bytes
SHA-256: 07f0eb4e08538bce0dfc263a103451dfa918a0e8a369cb597f07a940556bfcca
font_02_sfnt_off00008830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8830 11984 bytes
SHA-256: 79fc56ee404209d6038e7c2cd39267b09c7579caff744d5aff6dba82ffacf597