Malicious PDF — malware analysis report

Static analysis result for SHA-256 a295a5e1982b3256…

MALICIOUS

PDF

80.2 KB Created: 2021-03-18 20:09:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 380d4d22c3be0a61201a0045102f0bce SHA-1: 526e4d436ba5c77d9f32c1b573d4aeee5625fa04 SHA-256: a295a5e1982b32564aeb869855694dccec4c407cef5e197d339c34ec3353bd4f
156 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as a credential phishing attempt impersonating Outlook. The embedded URLs, including a redirector to a PDF hosted on weebly.com, strongly suggest a phishing campaign. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent to lure users into providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://veraxoli.weebly.com/uploads/1/3/4/0/134040716/veledupidetirix.pdf.
  • 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://jacksth.ru/award?keyword=botany+practical+copy+pdf PDF link annotation
    • https://veraxoli.weebly.com/uploads/1/3/4/0/134040716/veledupidetirix.pdfIn PDF document text
    • http://kepupefidi.iblogger.org/how_much_do_cashiers_make_at_walmart_2019.pdfIn PDF document text
    • http://italiahot.space/does_wawa_carry_non_ethanol_gas3bxpx.pdfIn PDF document text
    • http://uorott.com/baby_shoes_for_sale_never_wornraslg.pdfIn PDF document text
    • http://lunesygets.xyz/bososetofabu1iwo2.pdfIn PDF document text
    • https://xikisujegowo.weebly.com/uploads/1/3/1/8/131856166/puwubudepe_tofowe_gikomuxuwexiri.pdfIn PDF document text
    • https://cdn.sqhk.co/rumoligodo/Vyjjjgj/cricket_colony_setup.pdfIn PDF document text
    • http://epaytds.xyz/205686684108evr5.pdfIn PDF document text
    • https://cdn.sqhk.co/piredonina/bV9aibM/nafev.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/iePhfyj/mcintosh_speakers_wiki.pdfIn PDF document text
    • http://world-wild-shop.com/pinomexotiwamatezibodpdaw.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/eujiic4/live_football_tv_streaming_hd_apk_for_windows.pdfIn PDF document text
    • https://bemixujigimo.weebly.com/uploads/1/3/0/9/130969474/gugowepaboki.pdfIn PDF document text
    • https://cdn.sqhk.co/bipaneri/jfhdQgi/zubukekavajisironeseti.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/zubata/67372712244.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/book_opening_animation_template_free.pdfIn PDF document text
    • http://xixupokolaxusuv.epizy.com/tatilo.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/75638841346.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/consider_the_curve_given_by_y3-xy2.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/pusulomitemole.pdfIn PDF document text
    • http://jejotatimub.rf.gd/warband_clash_of_kings_gameplay.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_off0000fbf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF1 5124 bytes
SHA-256: 90c473694ca161e742a4b5c6e76df47ef0532564a03da64cbb750eb84b65ff7d
font_01_sfnt_off00010d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D78 11184 bytes
SHA-256: da24f3bb8809a6557973e6351e42a1cb84ee45a029c30c3dc5fddfe76261d1a2

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