PDF malware analysis — malicious · d039e319db886ff4

MALICIOUS

PDF

42.3 KB Created: 2020-09-01 04:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ba524de57b699e0ec6fec60137ac3c77 SHA-1: a2ec5084dc53e34073e7ba3bac70e82c2a31c133 SHA-256: d039e319db886ff4969ad2e141f94c556c8678332b0b5de7b044be20e4956f6b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=research+report+outline'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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.com/wix?keyword=research+report+outline
- https://static.usrfiles.com/ugd/3ab5ed_2401930007c5488a96e8be8cf978489f.pdf
- https://static.usrfiles.com/ugd/3e9e83_b207b5a8249c4d13963c50fbd60ba291.pdf
- https://static.usrfiles.com/ugd/3d0627_9b9e4611aa484a7788b83bf4674b0eeb.pdf
- https://static.usrfiles.com/ugd/b8c837_5d6deec0ed734868ab6adadb3c7a2167.pdf
- https://cdn.shopify.com/s/files/1/0437/8004/7010/files/bug_bounty_field_manual.pdf
- https://cdn.shopify.com/s/files/1/0429/8070/4405/files/51992817792.pdf
- https://cdn.shopify.com/s/files/1/0430/7061/9801/files/biblical_meaning_of_numbers_1-_40.pdf
- https://cdn.shopify.com/s/files/1/0431/7085/7122/files/24640205906.pdf
- https://cdn.shopify.com/s/files/1/0447/7625/9735/files/calculus_by_thomas_11th_edition.pdf
- https://cdn.shopify.com/s/files/1/0430/6193/6290/files/86461502081.pdf
- https://cdn.shopify.com/s/files/1/0431/7816/4387/files/39142742835.pdf
- https://cdn.shopify.com/s/files/1/0431/0522/2822/files/27501464312.pdf
- https://static.usrfiles.com/ugd/822ecd_95862999b248458b8d166c07d9bacae8.pdf
- https://static.usrfiles.com/ugd/3f0e57_23ef613fa615422ba800ab214ead5dbb.pdf
- https://static.usrfiles.com/ugd/2f7815_80bf1977bcd24231a1cffdb454823961.pdf
- https://static.usrfiles.com/ugd/e745be_16ca86a7df9b45afb75cb4e58831fca8.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_off000068c6.bin` `9e34f1ee52054a68f95f60a34f2eaa877609bec151ef723c4e41fb26585ae920`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68C6	5028 bytes
`font_01_sfnt_off000079e0.bin` `e564f01b770f58a03bfe8f2f70c6d3190a44c8e5f4cc6b7b84288a6cff4ce7b6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79E0	10052 bytes

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