Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae0212bbca4cd8e…

MALICIOUS

PDF

81.1 KB Created: 2021-07-16 20:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 93dba43ad5a00a1ec8ab1c91f7646ef2 SHA-1: 7e01251918e8bd6626e5c1a47527a02f444e8469 SHA-256: fae0212bbca4cd8e5ef7f36bc788b71451af55f36a11c854c3cd34ba5d8c9482
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded external URI pointing to 'allytemp.ru', which is likely part of the phishing lure. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8298

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://allytemp.ru/square?utm_term=using+thus+in+the+middle+of+a+sentence
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f078a7529fbe08b0ac393d/1626372264047/the_story_book_download.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8cc6e2b8982254c49f9e6/1625869422782/question_answer_of_nutrition_in_plants.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eda8bd50566b3f86670833/1626187965775/jibunekutuweneleti.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0825ee8848a1fc2462499/1626374750347/cool_words_that_start_with_s.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e859382b6fc73ef356d187/1625839928596/xokepogupiruga.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_off0000df18.bin
5fdd27ec36012310fdfd588bd26990db39f5aab7d951be755342d53ee4def0b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF18 15876 bytes
font_01_sfnt_off000107df.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107DF 16792 bytes
font_02_sfnt_off00011ff6.bin
6246b21401696ed37d37c585bbc1f9b969a533e4f8993b0687c8ece78db6321c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF6 10932 bytes

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