Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0e40042fc1e0cb…

MALICIOUS

PDF

91.8 KB Created: 2020-11-17 22:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bd363d773e5393183165607bf1f657d SHA-1: 17e923e4bda8674a1f8b57f8c713a1d7d5f7838e SHA-256: 5d0e40042fc1e0cba1147becb4f428aca329684287ebbf9b86a17eef588744f3
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to improve search engine rankings, a technique often used in advance-fee scams. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates this intent. While no scripts were extracted, the presence of many external URLs suggests a phishing or scamming attempt, likely leading to further malicious content or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffset.ru/strik?utm_term=rms+queen+mary+2+bridge+cam
    • https://cdn-cms.f-static.net/uploads/4383304/normal_5f9514f053722.pdf
    • https://lifagixuwemup.weebly.com/uploads/1/3/0/9/130969738/3f86f13046bc.pdf
    • https://biduvokiket.weebly.com/uploads/1/3/4/3/134367510/muton.pdf
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/lorubavevotu.pdf
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5f970b192f3c2.pdf
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/4413176.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/guvovigo/bikinumimo.pdf
    • https://uploads.strikinglycdn.com/files/8b530ceb-4070-49e6-a5f0-52f640195acd/financial_accounting_problems_and_solutions.pdf
    • https://s3.amazonaws.com/ruzumeb/jixidogisolowe.pdf
    • https://s3.amazonaws.com/zobuwubedak/adharvam_malayalam_full_movie_free.pdf
    • https://uploads.strikinglycdn.com/files/132cd300-c536-42b0-8289-2e227bdb1b38/the_summer_i_turned_pretty_quotes.pdf
    • https://s3.amazonaws.com/senodiw/kuzize.pdf
    • https://s3.amazonaws.com/najubu/other_words_for_smart_aleck.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_off00012927.bin
aee0188aec918e248a17ca774c279f97078d4a8124d7174f65af88f2720864ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x12927 5732 bytes
font_01_sfnt_off00013c99.bin
3be3da5cb999062e43c076f37a7ec545d8bc5a55a95ad08fc63e4a675331079b
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C99 11180 bytes