PDF malware analysis — malicious · 29981157646f4c6c

MALICIOUS

PDF

32.2 KB Created: 2020-08-01 14:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0f5de4362bd8446decbb3827b913c9d3 SHA-1: ce4d81b8f9abda6bce7a15c85d0076af335e1f8c SHA-256: 29981157646f4c6c28348848220945c344a7758f3e7461ed914591e7cf9612db

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a link to a known malicious redirector, ttraff.cc, which is likely used to lure victims into downloading further malware or visiting phishing pages. The document body, though heavily obfuscated, contains text related to a 'weedeater lawnmower manual' and the malicious URL, suggesting a social engineering pretext. The PDF also hosts a large number of links to other PDFs, likely for SEO manipulation or to obscure the malicious redirector.

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.cc/pify?keyword=weedeater+lawnmower+manual
- http://files.downtherabbitholewines.com/uploads/1/3/1/3/131379894/731196baed5faae.pdf
- http://files.3plids.com/uploads/1/3/1/4/131453156/816610.pdf
- http://files.flurryoffun.com/uploads/1/3/1/8/131871416/5044465.pdf
- https://cdn.shopify.com/s/files/1/0431/6643/3429/files/94859360913.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
- https://cdn.shopify.com/s/files/1/0434/5724/9430/files/30097204518.pdf
- https://cdn.shopify.com/s/files/1/0439/7904/7070/files/81343444090.pdf
- https://cdn.shopify.com/s/files/1/0435/6902/1089/files/27522534702.pdf
- https://cdn.shopify.com/s/files/1/0429/6278/0311/files/kagunaxotaj.pdf
- https://cdn.shopify.com/s/files/1/0435/4431/4011/files/19189889012.pdf
- https://cdn.shopify.com/s/files/1/0433/9243/4326/files/ropowemenuvosizopodal.pdf
- https://cdn.shopify.com/s/files/1/0433/0386/2440/files/firubajipanobu.pdf
- https://cdn.shopify.com/s/files/1/0432/6912/8354/files/boperotagusiperuzaj.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_off0000413e.bin` `052a33d3959af08a0f7185d5f6849c7c45de588a2a894a40de48048a3ebf6d61`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x413E	4900 bytes
`font_01_sfnt_off000051e6.bin` `daf5d863bc69a03dbd9832399b49ea810227e822622972e0d21137354e71e3d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x51E6	10304 bytes

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