Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddec9977669147e4…

MALICIOUS

PDF

60.9 KB Created: 2021-01-01 14:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3b353c8609164929fc0b92f01b82b846 SHA-1: a91487dda853cca1413b3726437dcba78cc2baa3 SHA-256: ddec9977669147e449b213d278e287dc21ff974d371394da75f4ea2969e17d7c
184 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, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting services, suggesting it's part of a link farm designed to redirect users to potentially harmful sites. The primary URL, 'https://trafftec.ru/strik?utm_term=battleground%2527+s+survivor+battle+royale+apk+obb', appears to be a lure related to a game download, likely intended for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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
  • 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
  • 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/strik?utm_term=battleground%2527+s+survivor+battle+royale+apk+obb PDF link annotation
    • https://wuluvaxezipow.weebly.com/uploads/1/3/5/3/135393263/jawakiniviniwodaweko.pdfIn PDF document text
    • https://zamivevi.weebly.com/uploads/1/3/1/4/131437513/9a287c0cc.pdfIn PDF document text
    • https://gawupuvuto.weebly.com/uploads/1/3/4/5/134530234/vuxelotikedevuboxev.pdfIn PDF document text
    • https://venifamu.weebly.com/uploads/1/3/4/5/134501621/7843950.pdfIn PDF document text
    • https://movobukibajub.weebly.com/uploads/1/3/4/5/134597216/vuputefate-zorigafanixukop-samuvegesofu.pdfIn PDF document text
    • https://sizomejuxitiz.weebly.com/uploads/1/3/4/7/134748976/6786855.pdfIn PDF document text
    • https://wigadanoj.weebly.com/uploads/1/3/4/4/134404864/59ea39ec96d4f.pdfIn PDF document text
    • https://rofovotojoroko.weebly.com/uploads/1/3/4/8/134878837/zikafobimisinupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448980/normal_5fbbca84839ec.pdfIn PDF document text
    • https://pozivikebesar.weebly.com/uploads/1/3/4/7/134759309/puxegezaxa.pdfIn PDF document text
    • https://jujoxiro.weebly.com/uploads/1/3/4/8/134875196/xirigewapetobobinub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424029/normal_5fdc10d025e8a.pdfIn PDF document text
    • https://xufiridib.weebly.com/uploads/1/3/5/3/135346556/zesepabevugi-lekeki-rulobupelavuveb-sujanasi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0c7ea89-75ce-429d-b973-07d37d3704ae/forest_hill_elementary_school_morganton_nc.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/arrow_3d_icon_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cefd3a5-6487-462d-9ebf-30cf6959ca47/85081882605.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBEF 5576 bytes
SHA-256: 976d15066b22de8472e6e3a7fd5535dddf293d618f8549683e49ee685f2574ec

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