PDF malware analysis — malicious · d730a7e78f87b85c

MALICIOUS

PDF

42.9 KB Created: 2020-08-25 17:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 01fab93e783f348fd386a7e8ed6bc773 SHA-1: efdd9935d2379d8051644533d62e2706c17bffba SHA-256: d730a7e78f87b85c5e0c346b95e94d516c95ef14061d0f0c5d88005b236af91f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc. The document body, though partially corrupted, contains the same text as the URL parameter, suggesting a social engineering lure to click on the malicious link. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure.

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.cc/pify?keyword=many+thanks+in+advance+for+your+answer
- http://files.frachetti.com/uploads/1/3/0/7/130738825/linizufex.pdf
- https://cdn.shopify.com/s/files/1/0437/8044/0215/files/www_nod_321_com.pdf
- https://cdn.shopify.com/s/files/1/0428/5700/5222/files/60136555543.pdf
- https://cdn.shopify.com/s/files/1/0431/1446/3394/files/69353783950.pdf
- https://cdn.shopify.com/s/files/1/0430/7684/5728/files/carfax_free_report_hack.pdf
- https://cdn.shopify.com/s/files/1/0431/7026/7291/files/xigavotaduluvirorupeser.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7645/files/basic_english_grammar_exercises_for_beginners.pdf
- https://cdn.shopify.com/s/files/1/0440/7400/8741/files/litulizaw.pdf
- https://cdn.shopify.com/s/files/1/0438/7205/9547/files/45320134908.pdf
- https://cdn.shopify.com/s/files/1/0427/4677/3660/files/collision_reporting_centre_waterloo_ontario.pdf
- https://cdn.shopify.com/s/files/1/0433/2873/3352/files/18488579704.pdf
- https://cdn.shopify.com/s/files/1/0431/5463/6949/files/vasafagubo.pdf
- https://cdn.shopify.com/s/files/1/0431/7508/4193/files/repanipisaxogevowesani.pdf
- https://cdn.shopify.com/s/files/1/0431/4506/8699/files/15778245159.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_off00005a34.bin` `f5352c376f7734a4c655282750b2db819dbd3c120ba5a3b57746297ad6a84066`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A34	5400 bytes
`font_01_sfnt_off00006c98.bin` `a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C98	1800 bytes
`font_02_sfnt_off00007525.bin` `cd9cd780e1abee9608416c5c5bcead310fdcacfbe3fafe97026c211bff0bd859`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7525	15468 bytes

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