Malicious PDF — malware analysis report

Static analysis result for SHA-256 77ddf73852c09dd3…

MALICIOUS

PDF

32.0 KB Created: 2020-11-08 05:06:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 417266a700820c3ab8f9647a536ed774 SHA-1: 0cccbc3fc685179bb19d00b3fe1ad17d382d718c SHA-256: 77ddf73852c09dd3fd8509da2fb8c56421c14f6a63dc3a824cdc600466a6b1de
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a malicious redirector link and an image-only lure, typical of phishing campaigns. It contains a link to `https://gettraff.ru/123?keyword=furniture+rental+agreement+form+sample`, which is flagged as malicious infrastructure. The document also contains a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the overall structure and URL analysis strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 32 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/123?keyword=furniture+rental+agreement+form+sample
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5fa6b7d0b0112.pdf
    • https://dodimugu.weebly.com/uploads/1/3/4/4/134483739/bd315755a87.pdf
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/5834768.pdf
    • https://cdn-cms.f-static.net/uploads/4427274/normal_5f9e4c8378ba4.pdf
    • https://batarodev.weebly.com/uploads/1/3/1/3/131380453/6834288.pdf
    • https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/paxilep-jebazidumuvaji-lekamur-powitekagutive.pdf
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/kuribokuwi.pdf
    • https://s3.amazonaws.com/vifusupegiza/ranododanewan.pdf
    • https://s3.amazonaws.com/robumuduluwise/2170041567.pdf
    • https://s3.amazonaws.com/subud/geometric_sequence_examples_with_solutions.pdf
    • https://s3.amazonaws.com/jidosatikim/block_letter_a_lowercase.pdf
    • https://s3.amazonaws.com/defipedibe/66596755015.pdf
    • https://s3.amazonaws.com/wepeliniru/xaruvemidoximeperiwu.pdf
    • https://s3.amazonaws.com/farezelof/jikulabuvosumijazugagaxiv.pdf
    • https://s3.amazonaws.com/panalipolifod/unit_8_study_guide_stoichiometry_answers.pdf

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