Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e0874041fa08b6…

MALICIOUS

PDF

86.4 KB Created: 2021-07-17 22:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1c772e8d048a86636943db4a5ad60074 SHA-1: e00ef8ac8e43e0b8d700ee8991e780351c751950 SHA-256: 52e0874041fa08b623b67b3df720bd5404326425c8deafcedc4c85ef553674bc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a URL, which is a common tactic for phishing or directing users to download further malicious content. No scripts were extracted, but the presence of an external URI is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/eoPDrVzwpx0/square?utm_term=candy+crush+download+mod+apk
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee01cea4137771ba05e654/1626210766165/hand_rearing_baby_pigeons.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f1c7c4f9057e4865389448/1626458052758/xizivamavoxexasuzepudojeg.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e93ff3320dbd0de2820c32/1625898995736/what_color_do_you_mix_with_yellow_to_get_blue.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e936441448b061984925c9/1625896516860/22377301420.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec84985f604029b991a7d2/1626113176892/stock_price_volatility_meaning.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f3250926e2e727c25f645a/1626547465487/5128681210.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee3ce32d09e34b72a0382a/1626225891988/vibujozi.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8a52700aa07a7895914c/1626114642235/jee_main_exam_papers.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee5885114e6b7b7de8a448/1626232965734/karubotawid.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e78c55ba333063f173808d/1625787477537/pestel_analysis_of_automobile_industry.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_off0000ef8d.bin
612e7f7facb269cb7757cb48fb6bda057a286d2dd7d588d6483d5a966e35ab9a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8D 16588 bytes
font_01_sfnt_off00011add.bin
fd9e5e69d80132feddba0362b1ab838717e8d7372a945386adc41e95abb3f6dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x11ADD 10880 bytes
font_02_sfnt_off000133eb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x133EB 16792 bytes