Malicious PDF — malware analysis report

Static analysis result for SHA-256 7801147ac542095d…

MALICIOUS

PDF

107.8 KB Created: 2021-03-13 20:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d06383d63abeb73670fb7ca98da24cd1 SHA-1: dc1a46cf62e1bfe103e66817c4584f4fb6e84d7c SHA-256: 7801147ac542095d7adb988801e819846cea0b9fbc85c425b3ddfd42ac4db661
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. It contains numerous external URIs, with a primary focus on `https://bologen.ru/award?keyword=career+in+commerce+pdf`. The presence of a link farm suggests an attempt to manipulate search engine results or distribute additional malicious content, potentially through the linked PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8905

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/award?keyword=career+in+commerce+pdf
    • https://cdn-cms.f-static.net/uploads/4470540/normal_60170a736acd6.pdf
    • http://paximosikelos.22web.org/bassinet_fitted_sheet_adairs.pdf
    • https://cdn.sqhk.co/suwapipejob/ida9uDJ/tenezeku.pdf
    • http://sesopuligu.iblogger.org/adblock_plus_safari_free.pdf
    • https://static.s123-cdn-static.com/uploads/4451549/normal_600154fc56b29.pdf
    • https://cdn-cms.f-static.net/uploads/4451033/normal_60323ac8dd506.pdf
    • https://cdn.sqhk.co/fusuzogik/ihjejcq/missguided_delivery_ireland.pdf
    • http://fesebenawasoz.iblogger.org/42883573090.pdf
    • https://cdn.sqhk.co/xurazegoba/f3Vjjhe/sovevozomizudumuzovapufuz.pdf
    • https://cdn-cms.f-static.net/uploads/4503050/normal_60490cc04596d.pdf
    • https://cdn.sqhk.co/rajunakeb/gjcicjc/70145876884.pdf
    • https://static.s123-cdn-static.com/uploads/4487192/normal_5fe4d27a5477b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_0ea365510e2f49b6b51b63ef0032b62a.pdf?index=true
    • https://s3.amazonaws.com/bivanud/stream_deck_mac.pdf
    • https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_3f9d96d9a2ab469fb697ce199f77c1d9.pdf?index=true
    • https://b3df6b87-ca8d-4c26-b815-8c697753997b.filesusr.com/ugd/896a32_36e007fefc554fe5b7f8498c8e833464.pdf?index=true
    • http://xezinupuwe.epizy.com/meal_planning_template_with_grocery_list.pdf
    • https://f6b99bba-f064-431f-ab68-6eacb91b2703.filesusr.com/ugd/35e1ce_e614aa48c57e48c7833f8137445b24ee.pdf?index=true
    • https://f89b8795-a90f-4359-81e0-6309601a98d9.filesusr.com/ugd/8e7730_1c14ed1a405b400cb67a49a4e3b47882.pdf?index=true
    • https://a146b927-ed54-472d-b3a8-6b137e313b92.filesusr.com/ugd/4d400c_6596f87e28d940e795ee264a30d44075.pdf?index=true
    • https://s3.amazonaws.com/gedexim/chrome_installer_offline_64_bit.pdf
    • https://s3.amazonaws.com/benubapopikaj/3555989578.pdf
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_c1f3d20756d7443f9b04a1d51251324d.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018005.bin
e600e645b76e891ac1e5b0ec6502854dfa308c48d3ed35be423492c3e31243b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x18005 4824 bytes