Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80e670e1206fb06…

MALICIOUS

PDF

71.8 KB Created: 2021-05-24 08:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 95cc3cafeef7eb22f1d6e1db5df1233b SHA-1: 52dc928b138cfebee491d738451bf29596e0bac3 SHA-256: c80e670e1206fb06e17bc146b3012c2634a3af842126c3f7cb7a8ed7ea0ee4e1
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 phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to malicious content. The document body, though heavily obfuscated, suggests a lure related to 'plate load test' calculations.

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://mezovuduw.ru/strik?utm_term=how+to+calculate+plate+load+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403808/normal_6045f1ddc4cd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528915/normal_5ff1493b2921d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494417/normal_5ff50cedeb5ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473651/normal_5fef494bbfa42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481059/normal_6060b98aa6ba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477886/normal_5fe7f05b05836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_601eee14ddae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454681/normal_6065397f59a8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491151/normal_5ff9f252203be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_604e11268c8ec.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/xakajoziwibi/likobir.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/pavixusunod.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/femitedawomitelumo.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/29458818605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61077fd0-e86d-474e-b1ed-a41db0c9d85b/47506637945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/881133db-fc1c-4659-8481-292968460a48/is_awakened_garou_stronger_than_saitama.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/19883993807.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/mx_hd_video_player_for_pc.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_off0000dc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9E 5024 bytes
SHA-256: cb3b4a45489a2b13a9c830bb9106dab29dfa29f466164959a0ca966a35d29690
font_01_sfnt_off0000edd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD5 10552 bytes
SHA-256: c65358843a4fadc021cb89e5d874aaaff76995cd3ce207e07b71693c6007ca77

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