PDF malware analysis — malicious · 38e40e519b9da445

MALICIOUS

PDF

49.5 KB Created: 2020-08-25 06:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8cc5a810678a9f66b0821710fde74d8c SHA-1: 9b9cd5d81dbe343598e22f1009754e646b99d944 SHA-256: 38e40e519b9da445d221a98e2de28ff3f1fdf2c902c5c17a015bca75ad885af6

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same redirector URL and several other URLs hosted on 'cdn.shopify.com', suggesting an attempt to disguise malicious links within seemingly benign content. No scripts were extracted, but the presence of a malicious redirector and a link farm strongly indicates a phishing or malware distribution attempt.

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/pify?keyword=mensuration+class+10+extra+questions+with+answers
- http://files.sweetmaplecafe.co/uploads/1/3/1/6/131607331/d51c9bd8d1086.pdf
- https://cdn.shopify.com/s/files/1/0439/4736/0414/files/vce_designer_free.pdf
- https://cdn.shopify.com/s/files/1/0428/9105/1161/files/national_achievement_test_result.pdf
- https://cdn.shopify.com/s/files/1/0436/9137/6794/files/wuvilavokazukibe.pdf
- https://cdn.shopify.com/s/files/1/0430/5531/7149/files/89156657557.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuvororixepexovi.pdf
- https://cdn.shopify.com/s/files/1/0431/2144/2977/files/arduino_nano_3._0_manual.pdf
- https://cdn.shopify.com/s/files/1/0437/8856/6677/files/belton_isd_calendar.pdf
- https://cdn.shopify.com/s/files/1/0431/4651/0504/files/25045381670.pdf
- https://cdn.shopify.com/s/files/1/0435/8438/9275/files/bubblesort_in_c.pdf
- https://cdn.shopify.com/s/files/1/0431/4690/3701/files/child_smile_images.pdf
- https://cdn.shopify.com/s/files/1/0433/2004/9822/files/50777092215.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005e44.bin` `dbf11e3be3ff0eb9ff9b705578b223cfd467ce5318bde4d53ae1f4900fa3444e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E44	5256 bytes
`font_01_sfnt_off00007033.bin` `29873636960ed72955d1ae82b890a6ca06cf9bd2c9852552fcc59e74c543267a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7033	10952 bytes
`font_02_sfnt_off000095be.bin` `c487aa01613208473e3c0b892de3260687b9c0341624d6c76d95d7849508583e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95BE	16088 bytes
`font_03_sfnt_off0000aa75.bin` `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAA75	4324 bytes

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