Malicious PDF — malware analysis report

Static analysis result for SHA-256 087c40aa706c6708…

MALICIOUS

PDF

79.3 KB Created: 2021-03-02 12:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d6e267d358bdd8f28cf76e019dd1c938 SHA-1: dbe8c4c1d2ee4bd26af081b3bcca186b0b0ef3ff SHA-256: 087c40aa706c67080d942cc19ad5acaedee653b4dd5b045662dc8137ccd23e1a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search engine result, aiming to trick the user into visiting a malicious site. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=what+are+the+different+levels+available+in+six+sigma PDF link annotation
    • http://wirobigi.medianewsonline.com/how_many_calories_does_powerade_zero_have.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/powoluxerudo.pdfIn PDF document text
    • http://mitidogifomasis.iblogger.org/when_was_the_dell_optiplex_390_released.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/rQCgfje/top_10_rock_songs_of_the_70s.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/QipcLhj/sijoralapovadifubi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383695/normal_5fdd469cc525c.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/ff6dnif/feisty_cherry_diet_coke_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nejesezape.myartsonline.com/how_to_change_code_on_liftmaster_gate_opener.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/881633311.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/ziloxewawudekinanufux.pdfIn PDF document text
    • http://pasigajixivete.epizy.com/47942732801.pdfIn PDF document text
    • http://momabuxamejuwev.rf.gd/ridadito.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/pan_acknowledgement_slip.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/pesekepunufubejugijekuf.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/61059166073.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/25586680089.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/26543944363.pdfIn PDF document text
    • http://nifekubipaxo.epizy.com/jerapawoje.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_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 5604 bytes
SHA-256: 18b7ed8e67e6f94e32e550d761ee2d826574fe56e700108d5b632c05d6b84277
font_01_sfnt_off0000fe2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2F 1936 bytes
SHA-256: b896cf420d67f16b10940560c9bed40f752809473624917c27c77593c290bb83
font_02_sfnt_off00010775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10775 11080 bytes
SHA-256: 809e51c8ec7ec99597e6ea0a1e8407ca6134c9dfed591808b3c5d46b499b72b4

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