PDF malware analysis — malicious · 67a704a964504e86

MALICIOUS

PDF

80.3 KB Created: 2021-07-19 02:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: d621032e851c390854541b7da782237e SHA-1: c7d22646d67c613151423f3357b33e2325a19fdf SHA-256: 67a704a964504e866c1fa540558e2f2c1d03e8c749e2a2f2d01ffd9372d9db5f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URI pointing to a URL that, while currently marked as benign, is part of a pattern often used in phishing campaigns to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9906

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/nCRFBnYrBHY/square?utm_term=certified+ethical+hacker+version+9+pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e76a470439116319b1a7aa/1625778759238/expression_of_interest_letter_sample_for_business_contract.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f309690b174908920a0daf/1626540393170/nice_words_starting_with_r_to_describe_someone.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f29ac7c5d9e6782cd985ce/1626512071529/state_parks_near_asheville_nc.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f312d29c57c249393817a2/1626542802993/fogepu.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7086ef188817f7df8470/1626108038946/chest_burning_while_eating.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f20f7dab5c5e578896dcdb/1626476414060/mbbs_help_dams_notes.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8f5ac81c37306b2f8c2b/1626115930945/marketing_proposal_email_sample.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f3ba6880d83038fa86bc39/1626585704259/static_and_dynamic_definition.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eca4f297282d6f469361fa/1626121458456/61135029969.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_off0000d466.bin` `2ad077679a76d5b3a1511fbeabdd30d274a91e15395f782f5988bdd37bf1ac05`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD466	11076 bytes
`font_01_sfnt_off0000ee39.bin` `1f7f9fbcf9127f3da57e4ba1462a67c1edba8ab71e0bbab5e7fbbbb57b37bb7c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE39	17620 bytes
`font_02_sfnt_off00011b2a.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B2A	16792 bytes

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