Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd448c3ffa98f26…

MALICIOUS

PDF

92.9 KB Created: 2021-04-15 00:16:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2f2886ea9f5e5d2d8873dade2448226 SHA-1: d5e6d64900b4f0aaa98de968a2461dd28f9d7525 SHA-256: 1dd448c3ffa98f26b80f466a0b4cc363f7aa1bb18f6be9b217a501cd58b24f2d
204 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous external links, including one pointing to a potential landing page for a phishing campaign. The document's structure and content suggest it is designed to trick users into clicking malicious links, likely to download further malware or lead them to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dugedepap.ru/strik?utm_term=medieval+2+total+war+stainless+steel+hardest+faction
    • https://static.s123-cdn-static.com/uploads/4489969/normal_5ff26f5025de5.pdf
    • https://cdn.sqhk.co/masezupusi/gTlythh/tuvixujo.pdf
    • https://static.s123-cdn-static.com/uploads/4455881/normal_6000adfa54337.pdf
    • https://static.s123-cdn-static.com/uploads/4380674/normal_5fcaaadba0ada.pdf
    • https://siputewebototab.weebly.com/uploads/1/3/4/4/134480832/3462239.pdf
    • https://cdn.sqhk.co/dasadogiso/HIPepih/divukamaluwe.pdf
    • https://cdn-cms.f-static.net/uploads/4373776/normal_60396c5a292f5.pdf
    • http://xobagubabawuma.iblogger.org/zotipugon.pdf
    • https://static.s123-cdn-static.com/uploads/4475997/normal_5fec7c8e67a7f.pdf
    • https://cdn-cms.f-static.net/uploads/4387037/normal_6029309e836c2.pdf
    • https://gotedimonov.weebly.com/uploads/1/3/4/7/134761190/joretuwegizotoxi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fakeloj.rf.gd/wokozoboxixeviniwum.pdf
    • http://gixagezupupif.rf.gd/sakufi.pdf
    • https://uploads.strikinglycdn.com/files/af0646bf-8d54-479a-b232-35a39e79dbe8/xagenufokevemalexareli.pdf
    • https://uploads.strikinglycdn.com/files/d8ff90c8-0508-4e28-929a-6de595471d02/zopakadavamisebo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012a90.bin
171d25f9a6a6b638e7561952c64b079e7cadaa21388e7c0d4a75437e3319deab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A90 5396 bytes
font_01_sfnt_off00013d0c.bin
d06a9b092dc2823f3b266bf18b75532bfece12f2ae4a893653d8e47979b5d8db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D0C 11812 bytes

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