PDF malware analysis — malicious · 94992e18f35d07e0

MALICIOUS

PDF

79.7 KB Created: 2021-07-13 08:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 241d4113d7cb620ba036346a580b0cbc SHA-1: 81054d35848a0c4797c499d930947eae3c84c81f SHA-256: 94992e18f35d07e02323bd02ee32652078cb3f58b2435c40ace43d5b59031f04

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample was identified as malicious by a machine learning classifier and ClamAV with a signature indicating it is a phishing trojan. The PDF contains embedded URLs, though they were classified as benign. No scripts were extracted from this sample, and the document body was unreadable, preventing a more detailed analysis of the lure. The primary threat appears to be the known malicious nature of the PDF itself.

Machine Learning

Nyx PDF Classifier malicious score 0.9511

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/iXsW93xxTQA/square?utm_term=saliva+coming+out+of+mouth
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8ce80f7d8d50062c6854/1626115304934/72663468226.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e843d477c56e0f704ad2d3/1625834452470/can_i_substitute_lime_juice_for_lemon_juice.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb385c4d2886679e36ce8/1626125189143/energy_transfer_in_a_circuit.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecc3027971f422f04c9c69/1626129154270/kowelo.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e79ada9bae382bbabb90ae/1625791194772/oral_squamous_cell_carcinoma_staging.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecbda3edb2c669a4792015/1626127779393/68298057491.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8f1a792abcc18c4f3d566/1625878951999/wejewokefosakajoxut.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecd3d9f64979768eeb36e6/1626133465701/learn_tamil_from_english.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d600.bin` `4fd50c12e0cca141a4e2059e4b9377c3b9c02b91b2ac18249a2bf4bed378c4f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD600	17176 bytes
`font_01_sfnt_off000102c5.bin` `2f6b52c7ad26faa881ca80b7f6e126c7ad7156816d3d6b6ec42d83ae94a246b9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102C5	10624 bytes
`font_02_sfnt_off00011aee.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11AEE	16792 bytes

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