Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ccd8f01afd17d1…

MALICIOUS

PDF

78.3 KB Created: 2021-07-17 05:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 699b4243bf6aba0de72ff9afd6eaf760 SHA-1: 6437b6d6244886429730e7e2d2c498427255dbe1 SHA-256: d7ccd8f01afd17d1fb146964943a2b30eca2cddd242bef6f66cbb544470fbd66
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs that likely lead to malicious content or phishing pages. No scripts were extracted from this sample, but the presence of embedded URLs and the ML/ClamAV detections strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8755

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://feedproxy.google.com/~r/sq/ugae/~3/4aHNpQc2m6I/square?utm_term=the+ten+commandments+crossword+puzzle+answers
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec88165978cb5ccaab465a/1626114071017/exponential_function_two_points.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e904b6854c1d3b3485e64a/1625883831028/gw2_fastest_way_to_level.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec868d7a1add4dee1fcc9e/1626113677496/grokking_the_system_interview_free.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7df618f757b1ac451ca1c/1625808737960/japan_tv_channel_guide.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e949528fb24157da7157d4/1625901394081/can_you_play_gamecube_games_with_a_wii_remote.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f23a77d416f421c157c035/1626487415424/most_common_cause_of_dementia.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7e312de985067772e890/1626111537378/34334194892.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://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_off0000d146.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD146 16792 bytes
font_01_sfnt_off0000e958.bin
1221c18c607e28bf8f83597072f643028d190a06973de879ecb1eea9d870b074		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE958 16436 bytes
font_02_sfnt_off000113fe.bin
5681c5d3d45ddc12af513f6276d8d06dfd11d1192640bd675a90e5c124f00eca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113FE 10896 bytes

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