Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c64dbeeefe280a7…

MALICIOUS

PDF

75.3 KB Created: 2021-01-14 11:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 77dd3c9da20954ffaae466d7b238c5d2 SHA-1: e86d8997a1037819752afec627437e6862983355 SHA-256: 1c64dbeeefe280a74bb67d4e9a3c02187020cafc49abafd8bc94cb7cb573e9e2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. An external URI pointing to 'trafficel.ru' was extracted, suggesting a lure to a malicious site. The document body, though heavily obfuscated, contains references to 'Bangalore offline map' and 'wkhtmltopdf', indicating a potential pretext for directing users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/aws?utm_term=bangalore+offline+map PDF link annotation
    • https://cdn.sqhk.co/pubodegosog/ufqjeji/thomas_and_friends_trackmaster_monkey_mania_thomas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450898/normal_5fb8e67dcc163.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454167/normal_5ff434c533ff3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403408/normal_5fd92b3039904.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409114/normal_5fdddf4fcd234.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/zijivevip/bozasasukuvekojirofi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/zebusilifoda.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/wobiporadevazolo.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/97683032511.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/how_to_comment_out_a_block_in_matlab.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_off0000eb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB01 5092 bytes
SHA-256: 3747f926f31540f7dc3314c80f07fe96fa42c06ca99e34476a344cde75b1930d
font_01_sfnt_off0000fc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC41 10844 bytes
SHA-256: eb6ca417e934acbb692b41278339571ce333358677e737e0d3b484583824e14a

Open this report in the interactive analyzer, or submit your own file for analysis.