Malicious PDF — malware analysis report

Static analysis result for SHA-256 f702aa92a7547edd…

MALICIOUS

PDF

88.2 KB Created: 2021-03-15 23:57:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 667d6bc4bbe596a967457ba794acd06c SHA-1: 81cec4ca705952558ef4a8241baad6e61ed9d486 SHA-256: f702aa92a7547edd82cffa9b820a5b49dad0150239e1ca215347b4ddc4cc2ed3
186 Risk Score

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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/wix?keyword=charging+station+spawn+timer+wow PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482849/normal_5fc963eb4117b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427293/normal_60317c4bafec8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389581/normal_5ff4e19b6d007.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451212/normal_5fd903c86b157.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_f53810349bda4f04b80a00dca3a0aac1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/14733792627.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e1f941-919f-4c3e-b27d-d44a3a68a8a2/65726584897.pdfIn PDF document text
    • https://2e907eb7-0cdb-46e5-a4de-ff0e34d1b96e.filesusr.com/ugd/7ea2c5_f02699a9e1cb44579538dc8bd3c87c38.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e92a94ac-abd8-425f-a80f-e5b1bbcf5860/nolidovu.pdfIn PDF document text
    • https://1423d76f-a56f-4481-bf87-726e17039346.filesusr.com/ugd/14aee2_83b5b2605d534eafb90e9d645dd02bca.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/960502a9-0097-407a-bcfe-c80249d1c241/negazegi.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/tivazevivewone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0062888-2889-46a4-9a6e-d0e957bb008b/98372599504.pdfIn PDF document text
    • https://19d8af67-ac20-4a7c-8ffd-69be953788a8.filesusr.com/ugd/578741_b46e42e0ef2340a98eb97cea9d2f4490.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/784e65a3-fd61-44c1-bb95-84bbde255cc0/is_pokemon_sun_and_moon_anime_canon.pdfIn PDF document text
    • https://535a9070-e28a-464b-adc5-c02ad08be00b.filesusr.com/ugd/9df9d6_2f0210458e5a4bab97d6a3c5cc6a54a3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/39706984717.pdfIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_a8448e4b64774437a9bc206bbc2ea876.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f177c582-90cf-4bed-af42-0b5770aff110/washington_redskins_top_name_change_ideas.pdfIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_2595985ddcff42b2aabfad26bed19713.pdf?index=trueIn PDF document text
    • https://f3b8d348-8566-49c9-a9f8-a2c3b9e1bc8e.filesusr.com/ugd/f1c748_941c7ad1f06f410980cf8605a71b9791.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wewiro/asiana_airlines_pilot_uniform.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_97f9c697451d4d4fad77bb613f58829c.pdf?index=trueIn 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_off000117ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117ED 5196 bytes
SHA-256: 76e981eab2e058bd89c231a2d65a9290f6cd116ded56d9168e7f71a022952bfc
font_01_sfnt_off0001297e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1297E 12144 bytes
SHA-256: 2d3470aba6aa9129c77743a3ed19b6e3dc243ffd52ee0b289b4f4ba3f616784c