Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3224c3da999472…

MALICIOUS

PDF

47.7 KB Created: 2020-10-27 17:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 053cef5abbb7136186e2db63d354e4ab SHA-1: 9ad3fba053486e87731b3faf8a948ac614e4fc87 SHA-256: 2a3224c3da9994720eba9fed83d922cf63153b930cbfb267007c631f4dc60e22
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://gettraff.ru/pify?keyword=mapping+trophy+bucks+pdf'. Additionally, it exhibits a high number of embedded links to other PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of malicious links and the link farm structure indicate a probable attempt to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://gettraff.ru/pify?keyword=mapping+trophy+bucks+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f8730688b140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378618/normal_5f9582fed9ae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391302/normal_5f9626fde6b34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_5f935075c1375.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/zavababaxusi-vifuto-vobogiwev.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/bupenafutapepukakase.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/75c593a68.pdfIn PDF document text
    • https://xepajozojiv.weebly.com/uploads/1/3/4/4/134476610/kifiw-rujisumoz-poruk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5f8f3df8b6a40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_5f8f8ab1db2da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f953dfb7c6c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5f8df8669d78a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f87178006c8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_5f8ce98c3d38b.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/voxipanovigepiv/58960805278.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/antonio_gramsci_biography.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/xuzugaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/75746094881.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/jazz_blues_guitar_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/the_magic_staff_andrew_jackson_davis.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/10_thirumana_porutham_meaning_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/analise_e_interpretao_de_dados_em_projeto_de_pesquisa.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/binomische_formeln_bungen_klasse_8.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_off0000792e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792E 5696 bytes
SHA-256: a9d58443391e64a72651ef6bba368fc28f2bae32ea4cb6acc64a6e2869290494
font_01_sfnt_off00008c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C84 11024 bytes
SHA-256: 5d89e078f7e5aaa5e1b8c7a10cc59b97155f61a307968304b7b987a44f0fc860

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