Malicious PDF — malware analysis report

Static analysis result for SHA-256 86abe2064a519b27…

MALICIOUS

PDF

73.8 KB Created: 2021-03-22 21:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5b4fd367870974aeca8dcac2744e81d2 SHA-1: 290bee9ce44b1b53f6c9ed984c48c99038abd2c1 SHA-256: 86abe2064a519b2722ae450ed4f45f35fa38dcf23155fe734ed0077d580594e1
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'historical recount text', aiming to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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
  • 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://maypoin.ru/strik?utm_term=what+is+a+historical+recount+text PDF link annotation
    • http://fujigukatujewu.medianewsonline.com/favoki.pdfIn PDF document text
    • http://sexesex.site/nuxobavanigigonug2vd1.pdfIn PDF document text
    • http://citimart.online/how_to_fight_sanscsprx.pdfIn PDF document text
    • http://antinomi.design/wfc7500vw2_not_spinningcbzhq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403531/normal_5ffcfdac0592e.pdfIn PDF document text
    • http://fakexexu.sportsontheweb.net/alquran_alkareem.pdfIn PDF document text
    • http://sobuvide.mygamesonline.org/dialysis_machine_working.pdfIn PDF document text
    • http://pifofobexaxel.mypressonline.com/44492648885.pdfIn PDF document text
    • http://rabota-plus.club/marvel_movies_to_watch_before_endgameg96g4.pdfIn PDF document text
    • http://italysummer.fun/273657597395kcqm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392868/normal_601d96e913f86.pdfIn PDF document text
    • http://7lessons.space/newenuzobrypsj.pdfIn PDF document text
    • http://sokfresh.fun/9182873698kmkv9.pdfIn PDF document text
    • http://nokiwurugibub.mypressonline.com/spelling_bee_words_for_grade_1_and_2.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/toliwudalamem/48868875242.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/jewas.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/98719122225.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/42958766068.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/luxasibof.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/zamubewegamaxeb.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_off0000e4fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FA 4968 bytes
SHA-256: b561efa8986d9012204f2d1fc3ad17fd9903f4470fe0b4ef689f974803ea8db7
font_01_sfnt_off0000f5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E9 9964 bytes
SHA-256: bc0143e5bdf5ec2aa815d1c71ff80b22e79bafffd1efad26ae5b7e47d8f92ab0

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