Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7edcd7528aeaa6…

MALICIOUS

PDF

84.3 KB Created: 2021-07-22 23:35:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7dbe710f865068ce254eb2de1eb4e6ba SHA-1: 67581d40d3a96307256e3496b1fa291480c7fed7 SHA-256: 8e7edcd7528aeaa6bdb6f385eb1ab53e1e5044c0832f7d6c115eef6481ba94be
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious. It contains embedded URLs, one of which points to a potentially suspicious resource. The document body is heavily obfuscated, suggesting an attempt to hide malicious content or exploit. The presence of embedded URLs and the overall malicious classification indicate a likely phishing or payload delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/~3/9xivtwLAy4k/square?utm_term=pride+and+prejudice+fanfiction+forced+marriage
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f94d3b9f96d85b0b96aec5/1626950971826/zedufidugowukijatojabodu.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed5571f95b5524f952301a/1626166641182/milliradian_to_inches_calculator.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e922a266be7e490f0fa98f/1625891490502/cost_of_labor_and_delivery.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f821c1d0dde27ef57aae94/1626874306368/different_types_of_connective_tissue.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f8249f911a794f775d8009/1626875039474/dehydrating_reagents_in_organic_chemistry.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e81e7780504e0a776c67b5/1625824887753/jilonegerikaxubuxu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4575eaba5f52989b2f6ce/1626625886904/lol_colouring_pictures.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec83e7b6dedd3ae168c67c/1626112999858/7594442580.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f05cd8c872e80de5b32a04/1626365144740/post_appendectomy_complications.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb681ad57c82336582826/1626125953360/miracle_emmc_tool_crack_without_box.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efedc01c2a3138378d9357/1626336704845/i_will_love_always_love_you.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8cb57614165378940927e/1625869143738/31143260191.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7888288cf71862a86ff7/1626110089066/indian_contract_act_1872_in_tamil.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f253d41d3507074214ca43/1626493909173/32624035796.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edc9ace6792c2552b89560/1626196396455/1_to_100_spelling_chart.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee86ee0a53c127f5dc91d5/1626244846583/loyola_college_admission.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec780c154eb17b6848dca0/1626109964642/59837723708.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_off0000e82c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE82C 16792 bytes
font_01_sfnt_off0001003e.bin
a10d0b0a4c27a08f79951f119a0a875b7166b93b5434682c0f4e4df0c9c583d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1003E 16432 bytes
font_02_sfnt_off00012aab.bin
f2216b84c5e8bbafa6a07648e020ccc2d691d4dfb918ef91c555c09443844580		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAB 10980 bytes

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