Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b244ff148cc9b84…

MALICIOUS

PDF

57.0 KB Created: 2020-11-01 02:36:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 7ea0839639bb82fbdb0bdfd72ec70cf1 SHA-1: f2cebb12f08ffbee219356e26a65bdc056787d97 SHA-256: 3b244ff148cc9b84b95f45205ae582162d179d746bac8aaa6d3060171e561197
154 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which is identified as a malicious redirector. The document body and heuristics indicate a lure related to software cracks, likely intended to lead users to malicious sites. The presence of numerous links to other PDFs suggests a link farm or SEO manipulation tactic. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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?keyword=microsoft+office+2000+product+key+crack In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/migaruk.pdfIn PDF document text
    • https://doxeduzawixufak.weebly.com/uploads/1/3/4/3/134383044/venemux.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/filipefoxo_wuzivon.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/kivowof.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/zidezu.pdfIn PDF document text
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/peduxajivunosaxanotu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3852/1544/files/adidas_skor_herr_storleksguide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1333/8822/files/tally_course_syllabus_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6956/9699/files/76134801188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/2313/5405/files/fopazepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5103/2991/files/80101941295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8884/5210/files/89451075135.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_off00009df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF0 5560 bytes
SHA-256: e7d62493ae74f78dc34225e39653e24ad097d4ad10c4b3a6b899499039b12311
font_01_sfnt_off0000b104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB104 11476 bytes
SHA-256: 63a116f290db00f1d5c322117c396823c33a675fd9b2ad2aed8d400f48e965b0

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