Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ac1ae67f3355ce…

MALICIOUS

PDF

78.3 KB Created: 2021-03-03 15:09:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 3d3c5af46fdd3dc617957c57f634bb2c SHA-1: 073a70e5c827af5503114b0575c6c2926bf9331c SHA-256: 44ac1ae67f3355ced88fdbe0c7c45d619431630fdddc6fd978efbe707be832cc
206 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a link farm with numerous external URLs pointing to disposable hosting, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The presence of external URIs and a link farm heuristic indicates a focus on external resource engagement.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://midufefew.ru/123?utm_term=table+of+plenty+salem+oregon PDF link annotation
    • https://raxaregos.weebly.com/uploads/1/3/4/3/134363135/cba1d7f6488.pdfIn PDF document text
    • https://vopasigujar.weebly.com/uploads/1/3/0/8/130813381/takobugoj.pdfIn PDF document text
    • https://kovuvewu.weebly.com/uploads/1/3/2/6/132695697/viwatusopofilaj-letevenoxorob-mivuxowilamo-guwapuximebewu.pdfIn PDF document text
    • https://xatuzagu.weebly.com/uploads/1/3/0/7/130738971/3777593.pdfIn PDF document text
    • https://boxotegiperofog.weebly.com/uploads/1/3/1/3/131398000/pubajekozogemet-pabobimenunupuj.pdfIn PDF document text
    • http://girlsbeach.space/84061803771re37d.pdfIn PDF document text
    • https://megudetezibiso.weebly.com/uploads/1/3/0/9/130969982/2160593.pdfIn PDF document text
    • https://wudavatu.weebly.com/uploads/1/3/4/4/134457778/ee06bee345a8.pdfIn PDF document text
    • https://zozufawagizawag.weebly.com/uploads/1/3/4/4/134454621/8790720.pdfIn PDF document text
    • https://mewejubakokexal.weebly.com/uploads/1/3/2/6/132681976/73bf559522dfce6.pdfIn PDF document text
    • https://jafuxanabowam.weebly.com/uploads/1/3/5/3/135383447/a8946d8bc6bda19.pdfIn PDF document text
    • https://lojigimab.weebly.com/uploads/1/3/0/8/130814508/guzovubaneziluvogi.pdfIn PDF document text
    • http://krokoboko3.xyz/pocket_drum_apkky7ms.pdfIn PDF document text
    • https://mamifonor.weebly.com/uploads/1/3/1/1/131163935/9721041.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jitawidavez.atwebpages.com/monstrous_nightmare_drawing.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_off0000f1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FF 5412 bytes
SHA-256: af48d87c27b2a8a885e1151e4a955721572a49867b682ef36275107c043ad7bd
font_01_sfnt_off0001045c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045C 11620 bytes
SHA-256: 8fa6c1ace3b4ff5a0fa30945160d93353f47611bd3f453ed937f3a30b08f660d

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