PDF malware analysis — malicious · 2cefea39bcbd0116

MALICIOUS

PDF

86.2 KB Created: 2021-07-14 05:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: 9353299cbef79b714cb90ca5d1e37ae0 SHA-1: 11e324e5f45b1e27cf3a30b9681ba232939e269b SHA-256: 2cefea39bcbd01162bc8224620d0f598844ee8e765b6b2fadead0c0c634404cb

66 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The ClamAV heuristic 'Pdf.Phishing.Trojan' strongly suggests a phishing intent. The presence of multiple embedded URLs, even if some are marked benign, indicates an attempt to redirect the user to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and the heuristic firings point towards a common phishing lure technique.

Machine Learning

Nyx PDF Classifier clean score 0.1686

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/aauXj3bnHUA/square?utm_term=james+martin+seafood+chowder PDF link annotation
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edba04c8312e4ee1e12091/1626192388504/54816243403.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e85afae98ab22bd7d552d7/1625840378880/15807188910.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edc4accb43530604a535e7/1626195117065/faulty_in_tagalog.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed492ef2de0a6ebf317c8e/1626163502969/past_tense_of_light_up.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cc5e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC5E	16940 bytes
SHA-256: `7d81de2d032240565383dabc3228ddec2dc20ed5af5fa2e8770259bab7995117`
`font_01_sfnt_off0000e47f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE47F	16956 bytes
SHA-256: `5647258e93f3da2e3c9f17f29963998bee7b313b5df07fd9537036c70b0ee621`
`font_02_sfnt_off000110fb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110FB	2520 bytes
SHA-256: `e4db6278b5f22ce10f2425dd43e0e96be39eca010bc5772fb1cddf290af950b8`
`font_03_sfnt_off00011ba1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BA1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_04_sfnt_off000133b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x133B8	10772 bytes
SHA-256: `57b9630504bd637f70635f7f8dae3049cbe03119437896ca6f1aaa4d2041bce3`

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