PDF malware analysis — malicious · 44279d6a4a2782d8

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 03:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 85b3d62111091e5ceead13da0cf022c7 SHA-1: 0ef4e674d9f364010b7d4643c27ac9dbf4c5d9f8 SHA-256: 44279d6a4a2782d8a51c55a48687f5b98327d3a4d93006438cd3f935d3a78bbf

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to '1st grade reading comprehension work' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further indicates an attempt to distribute content or traffic through numerous external links.

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/wix?keyword=1st+grade+reading+comprehension+work
- https://static.usrfiles.com/ugd/87d215_1512a74f713c4ab89879fecadcef197d.pdf
- https://static.usrfiles.com/ugd/837d34_3eec2b1b212c40b6af7d53adb8d173c3.pdf
- https://static.usrfiles.com/ugd/b8c837_5e2332e9d968435c90a88c7900c7f6ca.pdf
- https://static.usrfiles.com/ugd/b8c837_179fd8786ac64f2db5de0ab89a31cd27.pdf
- https://static.usrfiles.com/ugd/b8c837_acf7e84155ca4fe594712a62d09d1253.pdf
- https://static.usrfiles.com/ugd/b8c837_f24b2a8162de48dea51353511b9fd9f4.pdf
- https://static.usrfiles.com/ugd/b8c837_2830e2995856465780ee103a7b19d419.pdf
- https://static.usrfiles.com/ugd/e7e4a0_aa3058ae3a2946e9a19b8ed15a037ca7.pdf
- https://static.usrfiles.com/ugd/b8c837_3cb4d3dc85054b18a0d286c6c6892292.pdf
- https://static.usrfiles.com/ugd/b8c837_c02035af460e4bfc92c6e51eb577c4a0.pdf
- https://static.usrfiles.com/ugd/7198c1_777a89e4207f45e998a7f830486c9ba2.pdf
- https://static.usrfiles.com/ugd/5b9365_4c29076dbbd8401ba7a009a531282608.pdf
- https://static.usrfiles.com/ugd/3e9e83_10376f8e479e452f8fdd9c381d6848b5.pdf
- https://static.usrfiles.com/ugd/8d57bd_3adf3cf2759e48c5a16fa964da6cc935.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_off00005cee.bin` `8bca0f3b58cd9c9bb73c51f82022d7f189e3f034452a2499c3203d13abacfb49`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CEE	5568 bytes
`font_01_sfnt_off00006fc0.bin` `6605fab2047b59bdd8c6e1b43d74ffbeee9f2b33494b3dd76d50a2fef5521931`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FC0	10340 bytes

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