Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a177adc83d21a08…

MALICIOUS

PDF

70.1 KB Created: 2020-11-25 00:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 079edb4fff4592f7577fdf9999f7f810 SHA-1: 17f8090a820a2ebd3de5cc0d5419cf3455a6b585 SHA-256: 2a177adc83d21a0897d70f7320e3109305ca85473f78261c26cde10958d73a04
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The heuristic firings indicate the PDF is designed as a link farm, likely to distribute malware or phish users. The ML classifier and ClamAV detection strongly support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?utm_term=awesome+gifs+for+work In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381546/normal_5f9258577fcc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419644/normal_5fbb1bfa6716a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_5fa2fcdd2c4e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420018/normal_5fafea3647850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f87cf431f4d8.pdfIn PDF document text
    • https://wavopotajulaja.weebly.com/uploads/1/3/4/6/134631105/671d98c5137834.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390995/normal_5f94efddcbae7.pdfIn PDF document text
    • https://wepejusekubikur.weebly.com/uploads/1/3/4/4/134441987/nenidirubegop.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.pdfIn PDF document text
    • https://nenizuve.weebly.com/uploads/1/3/4/6/134615173/gowuxed.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/somamere/bluetooth_selfie_stick_not_charging.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/ventilator_associated_pneumonia_adalah.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF07 4988 bytes
SHA-256: 94103220760e3a60c110725a69433638026be071212f36185e7075636305810d
font_01_sfnt_off0000e001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE001 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000e88e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88E 10304 bytes
SHA-256: 070b8aa308b06f4cf1c0536159f6e3b16a444aae129f3f997706483753f8eb16

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