Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7fc31f8d33348b…

MALICIOUS

PDF

65.8 KB Created: 2020-12-27 17:24:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 13c4d65f07a745440297799dc0f57feb SHA-1: 976c5a2976614189f3a08765ed4e2b8fcf5b7e7f SHA-256: ae7fc31f8d33348baed2156eec9ccbdb3355b7222706bf4397737ae653ca46eb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

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://traffine.ru/123?utm_term=every+praise+is+to+our+god+video+lyrics PDF link annotation
    • https://kukezuleji.weebly.com/uploads/1/3/4/3/134361302/xekemosibafen-bafuse-gimubokepumeno-mojokoru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473632/normal_5fd6c2dfe3922.pdfIn PDF document text
    • https://tijikazi.weebly.com/uploads/1/3/4/3/134373218/05fb4bfd6.pdfIn PDF document text
    • https://cdn.sqhk.co/bitubebo/FeggXAd/twitter_logo_black_png.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483587/normal_5fc46dff6d060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_5fbcb74e1dad4.pdfIn PDF document text
    • https://cdn.sqhk.co/fewisezux/hdRhhCh/watch_the_vikings_season_6_episode_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f896adc592f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500877/normal_5fb9798dd6286.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408871/normal_5fd70d4d831af.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c410f88-a26e-45f1-bf67-9ebf7e6958fe/montague_folding_bike_bag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac7329ed-7c39-45dc-9bee-cedfbc640829/atomic_structure_test_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2935c11c-56e5-4301-afee-aac54fe95bdf/calla_lily_wedding_bouquets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b8aa9ee-7b04-40e9-806c-f54bb3d033da/xopovunivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cae0e09-98f3-4274-94f0-45029428af03/akiane_prince_of_peace_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dce14136-526f-4f38-a5f7-698399bb7dfb/wofujidowudidinejo.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_off0000c7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A6 5360 bytes
SHA-256: 33101f10dba86e8b06b2fc7789c487f6d632e423c6d25441b4c0af2f30f5b363
font_01_sfnt_off0000da03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA03 9320 bytes
SHA-256: 2937e66d47adf1ad4ebb04f7c349393c34e8bbde222da251357554fcba501233

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