Malicious PDF — malware analysis report

Static analysis result for SHA-256 293d35b39cde358c…

MALICIOUS

PDF

60.2 KB Created: 2020-12-11 12:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0254aafb65f801df374d4f7b46f524bc SHA-1: b715fc6f47ccc5ff6cdb5edec8688d9c784c7187 SHA-256: 293d35b39cde358ccfe51851f7346325403bbd35bc6d6ae3e11fa7a3ae82bc9a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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://traffmen.ru/123?utm_term=etre+et+avoir+zazie In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367642/normal_5fa5c411e84a2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc3707fc14dfd36fe01a05a/t/5fc4b4451972c46e3c321618/1606726725233/what_is_the_global_village_and_cultural_imperialism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d834f159-a2a0-4e45-86df-3ace2ab70ddb/demibasiduvejijumitajo.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/creation_kit_tutorial.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78c2744e997374a2d5021/t/5fd0f10ca9c3635dae207981/1607528725883/10589390943.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c3d560f2895dc1e72903/t/5fc27000f3de5e49b5b34569/1606578177237/49120934085.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd5f9f89-d0ff-4444-8082-4ecd338674ab/cauchy_kovalevskaya_theorem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8452240-fc91-47f0-adae-0a6b14f59fcb/51506997596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50dca531-3e2a-4759-896d-7629b27fdabb/2000_toyota_celica_hood.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10b71bdb33045eec31c8e/t/5fc1222608845d0924b2f3d5/1606492712376/im_only_human_lyrics_john_maus.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/vonusapenizijowimilokoren.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30d185bcb0228a2907835/t/5fc5f4b06457125654095685/1606808754315/domamexoguwaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d372c89e1c4b8fe06c21/t/5fcf2bad0496d067bdcd586c/1607412653733/facebook_login_account_password_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a177dd47-125b-4ea3-b503-2ea47e8c752f/nejilemenekowefujep.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_off0000b24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB24F 4536 bytes
SHA-256: 185c80b954954a27065d35f82a85d10e2cab44f01e22b940f37be34f23088c3d
font_01_sfnt_off0000c1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D7 10468 bytes
SHA-256: 2e705be8f69c6fb454ca0a922d7057a20f2623a8f3a5e06c64e686dfebbc7cbc

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