Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d7ae8dc0562aec…

MALICIOUS

PDF

62.0 KB Created: 2020-05-20 00:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 0810f1d82c634faa7135116538a3140c SHA-1: fd68ee23f363dc4cb79fa476b8bd0afde8f7e3c5 SHA-256: 33d7ae8dc0562aec18ce0b0a18df6dee84f2a5bd73cd0e37dbb6c51f2def4df6
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a lure related to 'Base station controller components' but is primarily a link farm, with 30 external PDF links hosted on various domains. This pattern is indicative of SEO manipulation or a redirection scheme to malicious sites. The heuristic 'SE_PAYMENT_REDIRECT_LURE' further suggests a potential business email compromise tactic, aiming to trick users into believing there are new payment instructions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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 http://averagestories.net/uploads/1/3/1/3/131384611/131384611.html#base+station+controller+components PDF link annotation
    • http://bluewolfcleaningservices.com/uploads/1/3/1/8/131857586/pomutidakif.pdfIn PDF document text
    • http://digitechclassroom.com/uploads/1/3/1/6/131637149/sobar.pdfIn PDF document text
    • http://granvillelittletheater.com/uploads/1/3/1/3/131380786/texinolasela.pdfIn PDF document text
    • http://artprintsforkids.com/uploads/1/3/0/6/130604523/435244b8e.pdfIn PDF document text
    • http://letspull.app/uploads/1/3/0/6/130639998/molidubimizo-wanopewel-funoz.pdfIn PDF document text
    • http://allwaystowingtx.com/uploads/1/3/0/5/130551067/badebo.pdfIn PDF document text
    • http://rcgeneralcontractingservice.com/uploads/1/3/0/6/130621521/069568e4df0af7.pdfIn PDF document text
    • http://bebegrama.lt/uploads/1/3/0/6/130621916/dizojinafosozu_legome_fetikopexijedu_soforiwotuviba.pdfIn PDF document text
    • http://jcashop.com/uploads/1/3/0/7/130738620/wituboli-dogavuxeto-mexiniban-bolusawefu.pdfIn PDF document text
    • http://barbwire.studio/uploads/1/3/0/5/130588923/tunesediz-zufaxes.pdfIn PDF document text
    • http://annavsawyer.com/uploads/1/3/0/7/130775897/sejevimopimik.pdfIn PDF document text
    • http://kingsleyfrancis.com/uploads/1/3/1/4/131452794/b1fed5.pdfIn PDF document text
    • http://facenphotography.com/uploads/1/3/0/6/130605292/zekawo.pdfIn PDF document text
    • http://impecservices.com/uploads/1/3/0/2/130274028/wufulojowizek.pdfIn PDF document text
    • http://rouge-garance.com/uploads/1/3/0/8/130874504/3bfcc07.pdfIn PDF document text
    • http://empl.me/uploads/1/3/1/3/131379650/00ef5e.pdfIn PDF document text
    • http://gorditasterranova.com/uploads/1/3/1/4/131483830/b36e273dbc86d.pdfIn PDF document text
    • http://countrywomencancerfund.org/uploads/1/3/0/9/130969323/2ff55.pdfIn PDF document text
    • http://imitadoresofficial.net/uploads/1/3/0/3/130323167/muvekak.pdfIn PDF document text
    • http://tsengtravel.com/uploads/1/3/0/6/130604382/zedef.pdfIn PDF document text
    • http://fromart2finish.com/uploads/1/3/1/6/131636746/3167965.pdfIn PDF document text
    • http://architrust.co/uploads/1/3/1/6/131637409/3407143.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D8 11428 bytes
SHA-256: d1bcff123440cae19248758dd0f961279a4b83ff5c66e6cfb166151880a634f6

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