PDF malware analysis — malicious · 868cb606998b04c2

MALICIOUS

PDF

79.4 KB Created: 2021-07-13 08:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: e1b3bf662099e870af835872392cc1e3 SHA-1: dabacfc9f54c227ee60a8d6d25f32981b5fe1189 SHA-256: 868cb606998b04c225ab3c41dbe499421a4583ec63de102f22101e37bbf280d3

216 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a lure that instructs the user to copy and paste content into a command-line interface, consistent with ClickFix social engineering attacks. The embedded URL, https://allytemp.ru/square?utm_term=wifi+and+ethernet+at+the+same+time, is likely used to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
ClickFix social engineering attack high SE_CLICKFIX

Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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://allytemp.ru/square?utm_term=wifi+and+ethernet+at+the+same+time PDF link annotation
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7f67d6d117d6eeca55628/1625814654914/laxuxolakafotevilofex.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eca84a831aaf5e928dd4c9/1626122315074/the_little_book_company.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed1c53c2ef2d11c8d2bb68/1626152019737/34334191510.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e89fb8082d905bfad8eff0/1625857977013/living_your_best_year_ever.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8aa040274373759742e4/1626114720226/mipobumazukato.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7d1add2ac847ff7df09f/1626111258695/93976501240.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e952c283ae0c49023a9377/1625903810738/gafevesufagubuwolodigir.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e937f2025aa46e30d38537/1625896946995/bujumisujipijorabejig.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed03b3cdb2ce13c5219359/1626145715828/lust_in_the_dust_movie.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8bb9fc5d97713370812c2/1625865119915/3_pm_edt_to_ist.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec95e11951226b8b8c6ef5/1626117601746/how_to_get_buff_without_working_out.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8e7962c5c2f6215c6389c/1625876374344/28745226624.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d55d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD55D	10448 bytes
SHA-256: `ef847155cf2d30fd2627f49a0fe0473eca19cb77f877e77d48e64a11bc9f4a23`
`font_01_sfnt_off0000ecd3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECD3	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000104e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104E5	16896 bytes
SHA-256: `a29a0e1798491276710c21c176787a917610d4dd7838602937667bef1d00d660`

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