Malicious PDF — malware analysis report

Static analysis result for SHA-256 d93f3bece6144087…

MALICIOUS

PDF

80.8 KB Created: 2021-07-21 22:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ee297b2f1e17c6a5157205d16d4bae47 SHA-1: e98b7ab06bb53acf8a5cda767449171ae4e0ef0b SHA-256: d93f3bece6144087b38aca56fe5414476be05999d030d433428c057d66c64076
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URIs that point to external resources, suggesting a phishing or credential harvesting attempt. No scripts were extracted, but the presence of external links is sufficient to infer a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/razvivatel/yapz/~3/7R6buoffwiA/square?utm_term=who+made+the+first+motor+car
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f6cfeda7d83729ec1f6ef8/1626787821298/tevunutabebuxigaxati.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f194e25a3cf9148f239c39/1626445026284/tuzeguteneweziwuzili.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f528abb386920ff6e1cf35/1626679468146/danezapisifidikeziwedodom.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e908d8854c1d3b3486148e/1625884888441/blue_and_purple_highlights_in_brown_hair.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f4f3ef7121636e99b46114/1626665968085/fikuxaxopogumeno.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec78bb12c1416d2f19a1b6/1626110139316/81797856890.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3560c9dfa584dc9df56c9/1626560012205/12222914760.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f7af5640591676f71f2c9a/1626845014863/53021106407.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f733d4a0aa3721e5c9370b/1626813396646/tefokugad.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee85f9a005482cc15a6863/1626244601174/41918130880.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f241ca5f13a15bd813a15f/1626489290326/love_comes_after_marriage_novel.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f064250b1da83e50961d0e/1626367013360/25419736994.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f164f0133357608f3f08ca/1626432752226/forms_cerebrospinal_fluid.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f445269ee5897bffab65bf/1626621222654/50510430818.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edb5bc5a30a704d0c25f42/1626191292580/22411690174.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f8249f911a794f775d8009/1626875039474/dehydrating_reagents_in_organic_chemistry.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f805a91d7d066c9f976436/1626867113375/angel_numbers_meaning_chart.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f524bddeec58162044edbd/1626678462044/2994806376.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edca812e8a4a2aca77b843/1626196609855/flowers_that_have_5_petals.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4ff2304a1d97017aef71a/1626668835782/51593373728.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f86dc247dddc167fff1c45/1626893763158/converting_between_percents_decimals_and_fractions_answer_key.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f6633166e8821a32c4be12/1626759985540/6074873808.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f2deee26e2e727c25bae61/1626529518564/27024921490.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_off0000dcd1.bin
8431913ffef59f13be357de84894ac54a31bd9db8213aad48d47a60d6db46823
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD1 10584 bytes
font_01_sfnt_off0000f502.bin
e12f3b444eb800a75dacbd51d67b448559dfd1eebc4a94bfa502d3f06de4e4fa
pdf-font-stream PDF embedded font (sfnt) at offset 0xF502 15780 bytes
font_02_sfnt_off00011d84.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11D84 16792 bytes