Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d2d8caa411f892…

MALICIOUS

PDF

86.6 KB Created: 2021-03-11 03:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea0fc179fffa215eef4df69791b3962 SHA-1: dd01c616c7e879172ad236a53dc994d52d810c87 SHA-256: d5d2d8caa411f8920a5784b7624f83ef548fb696a53c7d97492012ee6b8cbc81
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, https://jumiwimov.ru/123?utm_term=companions+warband+guide, is likely part of a phishing or malware distribution scheme. The document's content, though heavily obfuscated, suggests a lure related to a 'warband guide', which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jumiwimov.ru/123?utm_term=companions+warband+guide
    • https://static.s123-cdn-static.com/uploads/4384461/normal_6005f3c41632a.pdf
    • https://cdn-cms.f-static.net/uploads/4494677/normal_603bb744391e5.pdf
    • https://cdn-cms.f-static.net/uploads/4485939/normal_6029f2dd89733.pdf
    • https://static.s123-cdn-static.com/uploads/4492272/normal_5ffe4a564fc05.pdf
    • https://wegujelad.weebly.com/uploads/1/3/0/8/130813898/vikifidejavusi-webodamiz-medonovomupe-jipinilekak.pdf
    • https://wugeneziwepuzi.weebly.com/uploads/1/3/4/4/134494794/gaduv_xuxex_moruti_vinukus.pdf
    • https://static.s123-cdn-static.com/uploads/4462974/normal_5ffd4c67f2c78.pdf
    • https://rejezulibege.weebly.com/uploads/1/3/4/0/134018585/a4c0754.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/petikamov/gegalojapadidusefu.pdf
    • https://s3.amazonaws.com/dojivewobasuval/45809044079.pdf
    • https://s3.amazonaws.com/lorifumofelu/13465274503.pdf
    • https://s3.amazonaws.com/jedobufudajewu/datasheet_of_lcd_16x2.pdf
    • https://s3.amazonaws.com/fusopoxipo/free_honorary_doctorate_degree_template.pdf
    • https://s3.amazonaws.com/safenalavojuwu/94458270261.pdf
    • https://s3.amazonaws.com/dotivaf/74297308571.pdf
    • https://uploads.strikinglycdn.com/files/6400e564-ed96-43e1-b629-194285b4ac9b/sat_scores_december_2020.pdf
    • https://uploads.strikinglycdn.com/files/269d82f8-d8f2-42e6-83a5-9aecf12b4bdb/38817949696.pdf
    • https://uploads.strikinglycdn.com/files/f7e667cf-fdb5-4e94-966d-f5bb83bba7c0/siwimujegolosetulaliw.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001015e.bin
5c5bdf6de6b1e48b52f8e3e1a7340fc7146ebd08b98a9c3fd54cbe0261c88623		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1015E 5384 bytes
font_01_sfnt_off00011399.bin
2fb8e639008f124eb3a0e3fa326ac0fa9c465ed59a2d6b76a20330a642c89003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11399 10504 bytes
font_02_sfnt_off00013799.bin
d5ba6d66c3b13f33ff65e5ab89598ad158011f02ec2133c7a5bc162e79422677		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13799 16296 bytes

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