Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f2552942f2b794…

MALICIOUS

PDF

91.5 KB Created: 2021-03-10 01:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 020eafacc80cc094e5451a83e1b7ca4d SHA-1: a2cfb587564d6790f5055dbf01d0a74a77a828c8 SHA-256: 07f2552942f2b794e06554b3ff72ad33684c26e4388b8f6ff8fbe889848f392b
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://xezojetit.ru/aws?utm_term=apex+nano+tv+mount PDF link annotation
    • http://tacfitproducts.com/tezepurapalalrleve.pdfIn PDF document text
    • http://torchqbfl.fun/90002598963igcwu.pdfIn PDF document text
    • http://beach-fruit.fun/accessibility_android_8wvowi.pdfIn PDF document text
    • http://axecheat8.xyz/chicco_keyfit_travel_system_reviewsfxblf.pdfIn PDF document text
    • http://esportzmlevent.com/moganulavupapegukufaqk09x.pdfIn PDF document text
    • http://seamanygau.best/mawamefofosapatolurj6prn.pdfIn PDF document text
    • http://maturibcgj.space/super_mario_odyssey_bonus_travelers_guide6ikmu.pdfIn PDF document text
    • http://wwbook.org/the_norton_introduction_to_literature_shorter_12th_ed3vfl0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sepawi/37099622935.pdfIn PDF document text
    • https://9e7b01ce-91ce-414a-93c5-ade8df4b7359.filesusr.com/ugd/cfbfd2_c5bd311ff57241819e34bbfc6054d3cb.pdf?index=trueIn PDF document text
    • https://c1f973cf-d719-4acb-8f9e-cd83ae4fb94d.filesusr.com/ugd/057766_adb1b0014167447bb7f9e302641d41a9.pdf?index=trueIn PDF document text
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_43b74a03114b4a25980d8cc27ae1ba1d.pdf?index=trueIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_28717f776598425199a1c8e7db6c5593.pdf?index=trueIn PDF document text
    • https://667abc8f-92ca-45d9-bc9d-789c80a68858.filesusr.com/ugd/dcd78f_05bd939de02b42599f4cd7bdf5a4fc35.pdf?index=trueIn PDF document text
    • https://f18b8dc1-3ce9-44bd-8712-01435d039869.filesusr.com/ugd/b97cba_a12eac9454034b5dbfcd7f35ffa01218.pdf?index=trueIn PDF document text
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_ef0082a9429c495b85b4ae508ecebd2a.pdf?index=trueIn PDF document text
    • https://93dbb2ad-f1e8-4c6c-adfd-2ef134399473.filesusr.com/ugd/df4650_eeddb44b0b50428da87a496d626a27b1.pdf?index=trueIn PDF document text
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_d502eb1c1ea84e97acf9b8a2e0f03142.pdf?index=trueIn PDF document text
    • https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_0d5d0201afd94056a0f2bcf6f5fc0ea2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e52202f-d6c1-4509-8ebe-c24da0ab1a87/brother_hl-6180dw_toner_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/95611246530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b196b2b-dac8-4645-af8b-4588531dbe76/53398614210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03840807-cddf-48f2-a36c-db2ef4c20829/rufekafubekebuvoku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/929bc01b-68c4-4a9f-abd2-6e53fedc60d0/62643336537.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/genemoteze.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EDE 4776 bytes
SHA-256: b427499ea13d53637bf0cadd0f187880d2e539e0d4f93b59ea2bbed8360bf899
font_01_sfnt_off00012f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F13 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00013a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A77 10508 bytes
SHA-256: 42c83bc5af0ba165586a144f95a98fbd983e8c3cd8c3370bfad8772b4d15774e

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