Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fee0ae087616be2…

MALICIOUS

PDF

74.3 KB Created: 2021-03-20 00:55:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04154f3995f0199ff809a80235dac485 SHA-1: 299369641ab7e4ca9d0973712cabdb3576dc19ba SHA-256: 1fee0ae087616be2e37388f31421d4a6c0c9fd2c7ed6c5522a06883a7672539d
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic firings indicate this PDF is designed as a link farm on disposable hosting, likely to distribute malware or facilitate phishing. No scripts were extracted, but the embedded links are the primary mechanism for the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dafemum.ru/wix?keyword=punctuation+worksheet+pdf+grade+6 In PDF document text
    • http://sdfsdfsdf.shaketorch.com/ritufekoredalibuz.pdfIn PDF document text
    • https://cdn.sqhk.co/parapirer/giWohbJ/44361537818.pdfIn PDF document text
    • http://xesaverilurum.22web.org/dirt_devil_power_max_pet_ud70167_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/72107269480.pdfIn PDF document text
    • https://cdn.sqhk.co/mukibusu/ge6jaVv/zuzujali.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/jotil.pdfIn PDF document text
    • http://ruszaimclub.ru/bissell_spot_clean_proheat_pet_leaking_water_from_bottomtb7rb.pdfIn PDF document text
    • http://tajevis.22web.org/vetevotigod.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/hgjipvm/70546808267.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/apc_back-ups_es_450_manual3xn7e.pdfIn PDF document text
    • http://promooffer.site/biwifasufoe0fx.pdfIn PDF document text
    • https://cdn.sqhk.co/pumurugo/gia5Ihf/new_breakup_whatsapp_status.pdfIn PDF document text
    • http://sellforce.ru/963278665994gu25.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/jfggNd1/fox_news_ratings_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/harrisons_principles_of_internal_medicine_twentieth_edition_vol.1__vol.2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zunimesigo.rf.gd/70068184493.pdfIn PDF document text
    • http://fuxeperejud.rf.gd/17832843947.pdfIn PDF document text
    • http://nivujipa.epizy.com/58911084761.pdfIn PDF document text
    • https://8c4778c4-ed17-4cf1-86f9-5448e21c5c15.filesusr.com/ugd/6da380_5bcd27dd99c84c47a3c1f4bf87b7319e.pdf?index=trueIn PDF document text
    • http://ritipoma.epizy.com/embroidery_digitizing_software_free_full.pdfIn PDF document text
    • https://8d275f60-8e36-4e70-8574-b6d542a617c4.filesusr.com/ugd/dbf6c2_8668fd562afb4b6cb75019865682754d.pdf?index=trueIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_7da5188bfb3648a99eb9d2f1d30f9f24.pdf?index=trueIn PDF document text
    • http://gebutetivifupa.epizy.com/48441929479.pdfIn PDF document text
    • http://jukikusikodopom.epizy.com/zigumazukalilunefetixu.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_off0000e3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F2 5696 bytes
SHA-256: e00bb6fb3603255cc1b5d4a1a9628da70d32deeb7ff30c11dcbddac5422d350d
font_01_sfnt_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 10628 bytes
SHA-256: 3bf1b5586e9918c567fbab7f5b0c343c59db9b02290bc3e067c1c2ce4efd1833