Malicious PDF — malware analysis report

Static analysis result for SHA-256 057eab27b2946606…

MALICIOUS

PDF

78.4 KB Created: 2020-11-25 20:15:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 798e5bf69fab738e361e933bfec2ebcd SHA-1: 1ce3318e6e948f10e3efa386a089ba54f1525575 SHA-256: 057eab27b294660617ea69cb104cb87226b02a7c2865c7ce483847028c03c485
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many pointing to S3 buckets, suggesting a link farm or content distribution mechanism. One of the primary URLs, 'https://traffine.ru/123?utm_term=the+dark+prophecy+pdf+online', appears to be a lure for users searching for specific content, likely leading to phishing or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffine.ru/123?utm_term=the+dark+prophecy+pdf+online
    • https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/fulebufuluxasarifaka.pdf
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/044dfdd0190b5a1.pdf
    • https://kanudepu.weebly.com/uploads/1/3/2/7/132740929/1861504.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jidagafinuxesu/blank_calendar_template_february_2018.pdf
    • https://s3.amazonaws.com/tarajix/arabesque_no_2_sheet_music.pdf
    • https://s3.amazonaws.com/toliwudalamem/manual_transmission_gears.pdf
    • https://s3.amazonaws.com/niporofez/aafaton_ke_parinde_song.pdf
    • https://s3.amazonaws.com/bopuxosavubare/phantom_troupe_leader_hunterxhunter.pdf
    • https://s3.amazonaws.com/gixawetopoli/winulufoxelufafibemet.pdf
    • https://s3.amazonaws.com/zirojopemup/balloon_tower_defense_4_download.pdf
    • https://uploads.strikinglycdn.com/files/d367ebfa-e49c-42ef-a6f1-6e447dabee3b/mrit_5.7_full.pdf
    • https://s3.amazonaws.com/wutisigila/14484379940.pdf
    • https://s3.amazonaws.com/tinajabizoreguf/aptitude_exam_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/d5f21b8f-4bbf-4e69-85cf-dbefcc7794bf/225253125.pdf
    • https://s3.amazonaws.com/mutirexa/3505153135.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_off0000f580.bin
81bc0a710157b464819dd9c62aacdd9d79cf244c3d5d341f06c10320f9ed19a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF580 5180 bytes
font_01_sfnt_off00010725.bin
1b758dba03e93c8c43781aa0e6970aa19c84d6d3dab0062e2db80d6d2fbbf2b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x10725 10660 bytes