Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1fee301eef4c09d…

MALICIOUS

PDF

75.2 KB Created: 2021-03-21 22:52:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2a349f9461d85d0a2b42598f22fd49a3 SHA-1: 9c7331db7a52bd90396087e6232ad6b7ff088630 SHA-256: e1fee301eef4c09d25e16bd6234ed300c04cac6a48228b595de8e157182017f5
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=how+do+i+find+my+hp+deskjet+2620+wifi+password PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409818/normal_5ffa8db7a6787.pdfIn PDF document text
    • http://hookup154.space/ganokeludadogezwuuyz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484999/normal_6017437245d45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407795/normal_6013f0ed88eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478667/normal_5fd805bd64bea.pdfIn PDF document text
    • http://my-favshopc.online/30916135395uc25g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_603a1bce9ca39.pdfIn PDF document text
    • http://kudatikixobulan.22web.org/fannie_mae_guidelines_on_boarder_income.pdfIn PDF document text
    • https://jutulomivepira.weebly.com/uploads/1/3/4/7/134775876/67427266.pdfIn PDF document text
    • http://moneymaya.site/chicken_curry_hd_images_freee8j4k.pdfIn PDF document text
    • https://wiwokuvivatazu.weebly.com/uploads/1/3/4/6/134629214/zivusu-tofazutiv-tubeluxosus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/wudugenagoxibad.pdfIn PDF document text
    • https://30d6ba4c-d201-4e26-8f31-a0e059b28788.filesusr.com/ugd/f9b8bb_5e3eb7edfaa3441fbadedf0d7cc0895a.pdf?index=trueIn PDF document text
    • http://forubav.rf.gd/56265234079.pdfIn PDF document text
    • https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_dce0bf6bbc524249b4f41ffc0f3a06b9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dojonuta/5693924286.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/kedoki.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_off0000e6cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CC 5972 bytes
SHA-256: abda48d7638767ebd140030eed490f40eb6c61a6d5e4df0a6a14a961f4f8bdbb
font_01_sfnt_off0000fb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB17 10740 bytes
SHA-256: af934c51caff5076c3c180813c1bc31098408fba9638bea414de7491d7dd18f7

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