PDF malware analysis — malicious · 9691500cffc1340c

MALICIOUS

PDF

77.5 KB Created: 2021-07-13 16:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 593947abb5d05ddae0bc6cd375a33086 SHA-1: b2645db37057b8dd9c1f2caa45276a6d925e18ec SHA-256: 9691500cffc1340c5311e5a4740b4ac4265e453338da7c6a338901f1b84e2f0d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded URLs, one of which is a feedproxy URL that could lead to malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of embedded URLs and the malware detection strongly suggest an attempt to redirect the user to a harmful site. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9214

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/~3/5VO7y1TeAqQ/square?utm_term=taurus+woman+in+bed+with+capricorn+man
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec89a512c1416d2f1b89d5/1626114469188/one_hand_clapping_play_store.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e76dd83a57136d255a9f80/1625779672467/38447802779.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed1e7da17c7f1bf0004fba/1626152573466/basic_sql_interview_questions_for_testers.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecfd33dacdbe35d624868f/1626144051109/pippi_longstocking_question_answers.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec96160e7a3c5fba3f2333/1626117654994/girl_healthy_weight_chart.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e863a1c97db7215f899634/1625842593247/fundamentals_of_soil_science.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8c653080d76c7a511954/1626115173670/right_of_way_def.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_off0000d204.bin` `17ab9c0034edabd346867b3450ac2097e98c83bcd071c24face0950ad49f9a7f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD204	15112 bytes
`font_01_sfnt_off0000f83b.bin` `cb188759c7ae2f7bf7dd35981fa9714a28eb1966fb4506b83968eb956e9ae40f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF83B	11020 bytes
`font_02_sfnt_off0001118c.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1118C	16792 bytes

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