Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff8366dad9120ff…

MALICIOUS

PDF

79.5 KB Created: 2021-03-24 01:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5ae43d3d7ce48f3c40198fb46ffd8d9 SHA-1: ab29a116d5123a1f1b7da6a82f4a076f35a19c77 SHA-256: 3ff8366dad9120ff0aabc04e77487072547f64d8a6ffc809c438b1cca6fa7539
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely intended to host phishing content or a further payload. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware distribution.

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://fokemale.ru/wix?keyword=french+words+that+have+p+in+them
    • http://testvvd.xyz/clasificacin_de_las_cuentas_bancarias86d8p.pdf
    • https://cdn.sqhk.co/fironabe/hbUzDgd/contract_assignment_letter_template.pdf
    • https://cdn.sqhk.co/rolileduvof/z8P1Bib/37625124568.pdf
    • https://cdn.sqhk.co/dulidara/Eiajdje/kendall_and_kylie_swimwear_ardene.pdf
    • http://sportita.fun/iphone_6s_plus_user_manualx0rus.pdf
    • https://cdn.sqhk.co/zovitamojim/VcSgjih/nikon_70-_300mm_vr_lens_sample_images.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8b83d164-5e56-46cc-b941-48f48810ddf3.filesusr.com/ugd/76ce43_030871cd00e1423897408c792f0f8730.pdf?index=true
    • https://s3.amazonaws.com/tixeligufokup/baahubali_2_movierulz.pdf
    • https://s3.amazonaws.com/bufexa/ruvavado.pdf
    • https://s3.amazonaws.com/mamibis/gusewitivaxinusunidilaw.pdf
    • https://uploads.strikinglycdn.com/files/413a4ad8-a6e9-44ae-9508-ff344c28f515/challenges_of_the_grounded_theory_approach_to_a_novice_researcher.pdf
    • http://jajuzefob.rf.gd/how_did_lincoln_and_johnsons_reconstruction_plan_differ.pdf
    • https://uploads.strikinglycdn.com/files/665bc848-cc5b-4263-b542-36cd7dab8e90/american_assassin_book_chapter_summary.pdf
    • https://s3.amazonaws.com/budovewesekaz/59341394006.pdf
    • http://volapubexu.epizy.com/arihant_integral_calculus_free_download.pdf
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_7107cdf348c3460f8a9523d35a5ceba6.pdf?index=true
    • https://s3.amazonaws.com/kiwopusafize/68349591246.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7ee.bin
be3895557d914b5adf870489bf267e66ab69f88eb97543a440ac1890462ec308
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EE 5388 bytes
font_01_sfnt_off00010a34.bin
ab39ed3c9818402ef37d9ff3f3e3a3d95cb2c5b95234d3c1c635be59543b516b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A34 12356 bytes