Malicious PDF — malware analysis report

Static analysis result for SHA-256 036140bedf6eebbd…

MALICIOUS

PDF

72.4 KB Created: 2021-01-11 18:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c1e29cd0e25b54d229d56ad262af6c1c SHA-1: 74baea70b9df0dc94eed262cb695f89af06b5c9b SHA-256: 036140bedf6eebbd146cfbe199ffc7a77669b13c85fad92809f5c92480f9f485
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs pointing to disposable hosting services like Weebly and Mozfiles. The primary purpose appears to be SEO manipulation or directing users to potentially malicious content hosted on these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=cribriform+plate+bone PDF link annotation
    • https://mosodujisar.weebly.com/uploads/1/3/0/7/130739504/2e6e6f6.pdfIn PDF document text
    • https://rejukikigukaw.weebly.com/uploads/1/3/5/3/135387704/widezulejen-wipesuvozemugi-xogoxewagajol.pdfIn PDF document text
    • https://pixojewunut.weebly.com/uploads/1/3/2/6/132695451/5030690.pdfIn PDF document text
    • https://site-1177421.mozfiles.com/files/1177421/texajamikopek.pdfIn PDF document text
    • https://site-1168109.mozfiles.com/files/1168109/64991956712.pdfIn PDF document text
    • https://vokugekezigak.weebly.com/uploads/1/3/4/5/134592112/a707e14c.pdfIn PDF document text
    • https://site-1177946.mozfiles.com/files/1177946/talking_ginger_2012_apk_unlimited_money.pdfIn PDF document text
    • https://moturepuka.weebly.com/uploads/1/3/1/8/131871952/4444dc828a.pdfIn PDF document text
    • https://wonikisemuk.weebly.com/uploads/1/3/4/9/134902350/vepuwolujo.pdfIn PDF document text
    • https://site-1172290.mozfiles.com/files/1172290/vazekomozererukubo.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/zagapaxa/22614669748.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_off0000ddfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFA 4916 bytes
SHA-256: bd2b244c78c01bcc5c76c6d5ceb1bf5b6317f0c753aee345582f08e20beb1ea1
font_01_sfnt_off0000ee8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8F 11888 bytes
SHA-256: 045cc0637b01b6e3f9650dd907d7897f07da7964ef74200bff754919391b4d23

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