Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c02e4fd86ff9f3…

MALICIOUS

PDF

89.3 KB Created: 2021-05-30 07:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 747eeea8078eed8fed80f31fc3e4eaa4 SHA-1: c98f1785b6157359956534bf5cac70804a75bb4d SHA-256: c6c02e4fd86ff9f369c9a2aacb2cc463acd8c9f1b6dc3dda9e3a9391f27838b9
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 numerous external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. One of the primary external links points to 'https://midufefew.ru/123?utm_term=grey+flannel+sheets+target', suggesting a phishing or SEO manipulation attempt. The ClamAV detection and ML classifier also indicate maliciousness, aligning with a phishing or trojan delivery pattern.

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://midufefew.ru/123?utm_term=grey+flannel+sheets+target PDF link annotation
    • https://sirunolova.weebly.com/uploads/1/3/5/3/135303996/2629752.pdfIn PDF document text
    • https://nedisixikimu.weebly.com/uploads/1/3/7/5/137511189/ledodunusof_megividivujokab_lapunamum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449768/normal_6058b279aa81d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495400/normal_605a522333a92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390324/normal_605a2de87f6be.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/87ed7a20-7464-40e8-ae9c-725242c732ad/busafepuwezominegenekin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ec26d5-5eae-4620-8c2f-6f46f2d811dc/dangal_full_movie_download_hd_filmyzilla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6a92df-6793-45ca-a146-53f31762910e/dilasonokevugirez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea1de199-c801-48f2-8a18-e5622960f385/frigidaire_affinity_dryer_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc015685-e2fc-4231-bbfd-2dd60cb11bfb/fipexuvazawibesibaverasav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86539fa4-bdbc-4b35-9f38-2877c193f09c/premiere_pro_app_free_download_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5a6904c-4004-49da-9d78-fa8386d45bb2/60319196674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40cead2d-a09e-41de-9bd3-7dc4d7982f4f/38466598968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bda48c9-8002-40d9-b3cf-ca8eafdb4cf8/do_autozone_employees_get_paid_weekly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89f01f11-3873-4679-b628-f75603573802/commandos_4_game_free_download_full_version_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/538e19fa-3cc3-42f4-be8e-fbbe4063d1ca/walmart_pharmacy_refill_delivery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c477455-d86d-4c7a-9d26-e84a4f7b88a6/moxofotetedojumepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21b0aad1-e1b3-47bb-bfa5-b40a15c3af7c/360005594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21b6ff23-d2ba-4852-9fcb-70afc0dcf635/jipifopegubolalazodatuta.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_off00011f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F69 5164 bytes
SHA-256: 6aadb910426fdcb41b6e058c2da248aacffe303e653ca667d2d30dc6ea68fb02
font_01_sfnt_off00013104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13104 11444 bytes
SHA-256: a8246ebd0e511d367ce00817f9caeb8a946de4cf9b9aa307fcbf064aeb2f452f

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