PDF malware analysis — malicious · 429ab9204f7427f2

MALICIOUS

PDF

32.9 KB Created: 2020-09-12 03:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 08393a9ae000902d8db86c09574882a8 SHA-1: 61dcfbecbcf14f042b63a1303aa620a78827760c SHA-256: 429ab9204f7427f2fe516fd9c132fc1dcf0bc2da5cf5a31d5a26109a4b945516

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier and contains a high number of embedded links. One of these links, https://ttraff.club/wix?keyword=bolne+wala+game, is identified as a known malicious redirector. The document's body text is heavily obfuscated, but the presence of this malicious link suggests the primary intent is to redirect the user to a harmful external site. The large number of other PDF links further supports a link-farming or redirection strategy.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://ttraff.club/wix?keyword=bolne+wala+game
- https://static.usrfiles.com/ugd/3ceeb9_cac5cc90b713453c851dee8fe4462234.pdf
- https://static.usrfiles.com/ugd/70a38d_d47a0419e3374e619355e9f021920323.pdf
- https://static.usrfiles.com/ugd/b30cf0_aef0e808a52d490ea7946bc975b928c6.pdf
- https://static.usrfiles.com/ugd/5ea4d5_df363ae3f3d843f9afc0f444f31faf5b.pdf
- https://cdn.shopify.com/s/files/1/0437/3420/4568/files/ashrae_189._1_free.pdf
- https://cdn.shopify.com/s/files/1/0427/9359/9132/files/muxowokufudezutojuzel.pdf
- https://cdn.shopify.com/s/files/1/0429/5419/5097/files/92772824185.pdf
- https://cdn.shopify.com/s/files/1/0438/3558/8770/files/depikimokuzomav.pdf
- https://static.usrfiles.com/ugd/1715bf_38698a4530f84ce485b5875b007438df.pdf
- https://static.usrfiles.com/ugd/3db607_ca03a8b9c961419889768743ff46e9ca.pdf
- https://static.usrfiles.com/ugd/963627_532ddebdc75b437c8e3fdd25ee14b0b1.pdf
- https://static.usrfiles.com/ugd/bf650e_62df994a20794ff4a269b0b08ab9fd1d.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004614.bin` `603978214033819421795890d8457b49c81efdda0ea9c3b7e0afdb1725488e58`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4614	4872 bytes
`font_01_sfnt_off000056ae.bin` `6ad92b64bdaf97f4533bdeebe7cfd950bce18be80a001a149cff6f0e7300cd54`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56AE	9592 bytes

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