Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e32132fab0179d…

MALICIOUS

PDF

81.1 KB Created: 2021-03-11 06:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d89ab9a29e55f1be9d3dd5e50cd53bd1 SHA-1: 953fc187742abed86113155d37eb84ee5ccc4072 SHA-256: a8e32132fab0179d495566e865fa3c18121f4c9281d1b3fc55e611783db0395f
176 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of external links, suggesting a link farm or phishing attempt, with one prominent URL being https://midufefew.ru/wix?keyword=epic+gift+cooperative. The 'SE_CALLBACK_LURE' heuristic suggests the document may be designed to trick users into calling a fraudulent support number, aligning with common phishing and scam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://midufefew.ru/wix?keyword=epic+gift+cooperative PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375200/normal_602efb6a68efa.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/pematoxukomixit.pdfIn PDF document text
    • http://boguredu.iblogger.org/panuvo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_6004ba0ae4145.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454678/normal_5fe2fa76b7cc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473031/normal_5fe11dac9fa6b.pdfIn PDF document text
    • https://jadojojipolukot.weebly.com/uploads/1/3/5/3/135337887/4135700.pdfIn PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/33024f3aca2f.pdfIn PDF document text
    • http://xukiwuze.22web.org/netflix_app_android_emulator.pdfIn PDF document text
    • http://demuxum.getenjoyment.net/how_to_increase_my_mental_strength.pdfIn PDF document text
    • http://zatuzosej.iblogger.org/pomubixatezunovi.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/bovadulaxifamijikamamu.pdfIn PDF document text
    • http://vavexefane.mypressonline.com/tatutepevomobemezufib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391898/normal_5ff92b74983ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481520/normal_5fe462aa223a7.pdfIn PDF document text
    • https://zixijatujomalul.weebly.com/uploads/1/3/5/9/135962278/3450923.pdfIn PDF document text
    • http://jesibijifinuz.mywebcommunity.org/biodiversity_ppt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/defipedibe/vunesapir.pdfIn PDF document text
    • http://gidigeja.rf.gd/is_it_true_that_on_your_16th_birthday.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/73801217290.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/tepajozokigibakivux.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF332 4672 bytes
SHA-256: effc3853d3df7524aac89ba122aee8b1c605e7aad114cdd83b337270ac5fef8c
font_01_sfnt_off00010335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10335 11112 bytes
SHA-256: 653011e16bfe4cb940dc68181cc004968ec8f43fcd4eb2b98c4b826ba40bc2c2
font_02_sfnt_off0001293a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1293A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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