Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5179b9caf85a96…

MALICIOUS

PDF

79.8 KB Created: 2021-01-14 06:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: fe06497cc58ab86bae4c82a65f72e91a SHA-1: 72207f7cf95393d66df6709c5da1ef4e2cfcdbdd SHA-256: 7d5179b9caf85a9634aa218c8cb385c0de3dac0cd8b4d3a5ce97e24a88621df6
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or link farm document. It contains numerous external links, many pointing to disposable hosting services, suggesting an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and extensive link farm activity are indicative of a phishing or content-scraping attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?utm_term=cradle+of+love+release+date PDF link annotation
    • https://cdn.sqhk.co/pasepizut/jpCicaw/setav.pdfIn PDF document text
    • https://cdn.sqhk.co/zisubiziwu/cZA3ieB/shake_shack_order_online_palo_alto.pdfIn PDF document text
    • https://site-1225904.mozfiles.com/files/1225904/namecheap_website_builder_templates.pdfIn PDF document text
    • https://site-1168006.mozfiles.com/files/1168006/pin_genie_locker-_screen_lock_applock_apk_download.pdfIn PDF document text
    • https://lurufabufukigo.weebly.com/uploads/1/3/1/4/131407807/6789474.pdfIn PDF document text
    • https://site-1178226.mozfiles.com/files/1178226/rocketman_1997_streaming.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493201/normal_5fd0ba84cb8b2.pdfIn PDF document text
    • https://zufuvedowenekoz.weebly.com/uploads/1/3/4/8/134861022/gumemobusif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447487/normal_5fb67683c926b.pdfIn PDF document text
    • https://cdn.sqhk.co/vamunidibu/hddjhjj/drop-_dead_gorgeous_meaning_in_malayalam.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/zatabopere-xotaw.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/cOGfPie/jopatunubixesokaxejowade.pdfIn PDF document text
    • https://cdn.sqhk.co/japexexuko/gidiaIv/dead_by_daylight_trophy_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fe13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE13 4868 bytes
SHA-256: a79d226ac89abf7babec5e93b1c7544828edf06c969e2c82e4b92a1e810e3f77
font_01_sfnt_off00010eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAE 10548 bytes
SHA-256: 8581868a95bdab32e4220314de9dc5bd3735ce7e7bf7bea71da6efc714c83268

Open this report in the interactive analyzer, or submit your own file for analysis.