PDF malware analysis — malicious · d13fc1debc39cd1a

MALICIOUS

PDF

43.5 KB Created: 2020-09-11 18:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6c4734a4517934c38e44c4363347be99 SHA-1: 65cc14a88391213f2f38acb5492347dd7fc61f16 SHA-256: d13fc1debc39cd1ab46730f728dfbd7e4d8f77fe6bd99b3f3725a9f7478eff43

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=android+studio+installation+failed'. This URL is likely part of a phishing or scam campaign designed to trick users into clicking through by presenting a seemingly relevant technical issue. The document body, though heavily obfuscated, also contains this URL and references to 'Android studio installation failed', reinforcing the lure. The presence of numerous other PDF links, while some are marked benign, suggests a link farm or redirection strategy. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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.club/wix?keyword=android+studio+installation+failed
- https://static.usrfiles.com/ugd/9edd50_5a1d75a1004049ec9ee3fe74e0fbff43.pdf
- https://static.usrfiles.com/ugd/b8c837_8ab6f62e8e2e41b5bbe52e324fcbac65.pdf
- https://static.usrfiles.com/ugd/cbe325_3ec504656aee4b33b83620b5eabdeb23.pdf
- https://static.usrfiles.com/ugd/a48928_64372d2dbd0845ffb8585e2a88584ba7.pdf
- https://static.usrfiles.com/ugd/974a4e_793938e4428b4636abaddab7bc63bc0d.pdf
- https://static.usrfiles.com/ugd/136d07_8f8812ab836d4effb481aeaeb8e66abd.pdf
- https://static.usrfiles.com/ugd/98d639_5ce1cdbd0be54ae8aa822119165737a1.pdf
- https://static.usrfiles.com/ugd/98e2de_c194c3c685a145168ac51d9974e97129.pdf
- https://static.usrfiles.com/ugd/90c678_7b95b233e47448fe82a551e9508cf93a.pdf
- https://cdn.shopify.com/s/files/1/0431/8606/1463/files/angina_treatment_guidelines_2018.pdf
- https://cdn.shopify.com/s/files/1/0439/7219/8558/files/82911750722.pdf
- https://static.usrfiles.com/ugd/b0c8dc_acf4828f2463483aa636a0d51e38f982.pdf
- https://static.usrfiles.com/ugd/b8c837_9b25b80b365d4e4b9469ac05a284220d.pdf
- https://static.usrfiles.com/ugd/68ec51_f367dc2c28634b26a86b7f2419a0bf95.pdf
- https://static.usrfiles.com/ugd/55f640_b7777318772e4955893de7e4e23b1ff0.pdf
- https://static.usrfiles.com/ugd/a59130_260131d9113f4d71b66247935865af0d.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_off00006ba8.bin` `60279a7861fe38ad57b560bb85d37ec3e9c401818c2bf9954400cdebe9a5691e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BA8	4892 bytes
`font_01_sfnt_off00007c58.bin` `c7a7266862313069ea2709763b5346311c5f28a5998e4ac331c5b1eb259f2070`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C58	10740 bytes

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