Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5d10b588047747…

MALICIOUS

PDF

73.3 KB Created: 2021-04-02 19:37:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1ac37aa4974cdbec83d6e1397d7e1abe SHA-1: b6996ab3187589ccd68d580f14d4336e490a7bc8 SHA-256: fe5d10b588047747503623378b230a13d0dd60514aaecb589bd6310193f27097
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of embedded external links, flagged as a link farm, suggesting a phishing or SEO manipulation attempt. ClamAV and ML classifiers also indicate maliciousness. While no scripts were directly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://bologen.ru/strik?utm_term=old+snapper+riding+mower+model+numbers PDF link annotation
    • https://bipekafus.weebly.com/uploads/1/3/0/7/130776646/6214246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_601fb65392557.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366358/normal_5ff0be2c108f7.pdfIn PDF document text
    • https://lizotolagodega.weebly.com/uploads/1/3/4/4/134495854/rawunupinedoz-xiliviretose-pemak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494677/normal_605c35ab264ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393785/normal_603c73d9a7156.pdfIn PDF document text
    • https://reravonox.weebly.com/uploads/1/3/1/8/131856904/1118824.pdfIn PDF document text
    • https://dugizixenopiloj.weebly.com/uploads/1/3/4/4/134457585/87fb0c80185a77.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5dea44e-ee8c-4876-8635-3a3c99aa12b4/67428077232.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/asus_maximus_vii_hero_nvme_support.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/arturia_beatstep_pro_controller_performance_sequencer.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/lebewolidorub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eecefd13-a925-4857-9207-7a6a252d75b0/beowulf_1999_full_movie_in_hindi_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/what_are_the_types_of_waste_materials.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/mabapotukavaj.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/left_behind_fnaf_roblox_id.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/professional_cv_template_free_with_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/21838315118.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/champcash_apk_all_version.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE186 5540 bytes
SHA-256: 9597df72650786f7b5d0b4c27361936e1487b6148acd071607b79185f8502376
font_01_sfnt_off0000f44f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44F 10548 bytes
SHA-256: a051e75a912045fd386e31f10c22ac475242ab01ea8d7daa4b3d0f89ca2cee4f

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