PDF malware analysis — malicious · b11492fd2d33f86c

MALICIOUS

PDF

43.5 KB Created: 2020-09-11 16:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0390fbb309520792ff755b07975c1253 SHA-1: 387f580a66e7c0bf60c990bcfce6084b2f742708 SHA-256: b11492fd2d33f86ccd5a8c4c79727ea7be03fd220b95ae96cd23100915f2cb96

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though malformed, includes the target URL, suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate platforms. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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.ru/wb?keyword=newton
- http://siwab.hole-group.com/uploads/1/3/0/7/130739695/58ef9644.pdf
- http://files.ascentvideo.com/uploads/1/3/2/7/132712040/b6209614026.pdf
- http://files.roundmotor.com/uploads/1/3/1/6/131637606/299f60cdf6ece.pdf
- http://files.bestdreamlife.com/uploads/1/3/0/9/130970014/1778580.pdf
- http://files.boogiesandbarrels.com/uploads/1/3/1/3/131379085/rujipomorupon-noxegut.pdf
- https://cdn.shopify.com/s/files/1/0430/9729/2949/files/appetize._io_free.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdf
- https://cdn.shopify.com/s/files/1/0434/7127/4146/files/59693335361.pdf
- https://cdn.shopify.com/s/files/1/0432/5376/0160/files/18060718878.pdf
- https://cdn.shopify.com/s/files/1/0437/3548/2529/files/31370877593.pdf
- https://cdn.shopify.com/s/files/1/0428/3524/7271/files/sample_communication_skills_interview_questions_and_answers.pdf
- https://cdn.shopify.com/s/files/1/0429/7375/7603/files/beethoven_piano_sonata_no._7_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/degixikopidad.pdf
- https://cdn.shopify.com/s/files/1/0430/5335/1066/files/game_guardian_8._53._2_apkpure.pdf
- https://cdn.shopify.com/s/files/1/0437/9361/2949/files/nevonilen.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000059e8.bin` `3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59E8	6440 bytes
`font_01_sfnt_off000069dc.bin` `504daff2f71c9c88e06c7cf129492a477fff0472feeeca3438b4ef272d778f64`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69DC	5200 bytes
`font_02_sfnt_off00007ba4.bin` `317035f117d411ffeaa10961249f3448509f1db0db4587fd99014f7d3aede86b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BA4	10924 bytes

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