Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c9dcfdee106585…

MALICIOUS

PDF

125.6 KB Created: 2021-02-22 10:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d3fb8583328fb634cfcc598bcafd8dbb SHA-1: a7adb4b4afe128ffc9a71a1d6c2e77fcff089997 SHA-256: 97c9dcfdee1065858a1e1d238e4ab37eff62f48f0de4ce84d464b2de90a2f436
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the presence of the external URI and the ML/ClamAV detections strongly suggest a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://crophysi.ru/strik?utm_term=im+westen+nichts+neues+text+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490523/normal_600dd783afb48.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/heRugf8/snow_skiing_in_colorado.pdfIn PDF document text
    • https://cdn.sqhk.co/sakiforivona/Lfpgg84/black_panther_actor_cancer.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/dGibdgh/42494089104.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/hdhj2YU/xulelida.pdfIn PDF document text
    • https://cdn.sqhk.co/guxudakakali/IhaNrgi/nozuvamerisuvizapajasatok.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/h4jgheT/lovecraft_country_cast_episode_2.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/hcHywjb/defodojebedinaganuxipeja.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/fRQiavY/easy_video_maker_free_download_for_mac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451227/normal_602c91f9400cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415321/normal_6011120fde988.pdfIn PDF document text
    • http://ruzazeruduzelu.22web.org/tetodowigupuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496810/normal_6020f95e96cba.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/ihMjaij/singing_in_the_rain_good_morning_clip.pdfIn PDF document text
    • http://dutadone.22web.org/construction_project_manager_jobs_long_island.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/xokebore/66685633967.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/duduxitakoponijodafofegi.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/nusojidunariginifati.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/zivomuzefiluxiduwulo.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_off0001ad24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD24 5152 bytes
SHA-256: 4bb7994b25039770dc99e57915556c095bd0611a480fdb76d0e84122c92f273f
font_01_sfnt_off0001bea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BEA7 12464 bytes
SHA-256: c1c48d66baff8b91de7af9f13144587231e8ad2421b64932555fb98f2103c7e0

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