Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c2d8106b97b0a0…

MALICIOUS

PDF

40.5 KB Created: 2020-09-08 14:37:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb34080c179ab55fc4847f394efba84f SHA-1: ffcf74a7a5c79c55de0696fe9aece9e19199e659 SHA-256: 52c2d8106b97b0a0b4f9e62acd7531468ad1d92d78c68300a125ee34921e1a6b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, one of which, 'https://ttraff.club/wix?keyword=today+weather+report+in+old+trafford+manchester', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to weather reports and includes this malicious URL, suggesting a lure to trick users into clicking it. The presence of numerous other links to Shopify domains, while benign, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=today+weather+report+in+old+trafford+manchester
    • https://cdn.shopify.com/s/files/1/0465/4491/2542/files/xpass_manual_de_instalao.pdf
    • https://cdn.shopify.com/s/files/1/0431/5090/1402/files/kotizova.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/22091608161.pdf
    • https://cdn.shopify.com/s/files/1/0433/7362/5500/files/children_s_handwriting_practice_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/dd_form_200_jul_2009.pdf
    • https://static.usrfiles.com/ugd/d99ef3_782e38e19c0a484c8717168e426fef29.pdf
    • https://static.usrfiles.com/ugd/7f614e_16275ef6dac94a4cbf60cfc5a7a80131.pdf
    • https://static.usrfiles.com/ugd/913720_562608c4613f4647b67b38e03858f8b7.pdf
    • https://static.usrfiles.com/ugd/b81754_c33c54a8fc1a46b09cf4c91c3d601153.pdf
    • https://static.usrfiles.com/ugd/516574_b7d37a50b8f34a5896363c4fb25e3609.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/wusurazivutaxuxed.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/koramuware.pdf
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/tanonikafetosuzatifew.pdf
    • https://cdn.shopify.com/s/files/1/0434/2674/2421/files/jevuguwub.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.

FilenameKindSourceSize
font_00_sfnt_off00005493.bin
848b06a86e346dc589e494d841bb8df749ff4382ba8162f4d6cbc4e1ca972412
pdf-font-stream PDF embedded font (sfnt) at offset 0x5493 5540 bytes
font_01_sfnt_off00006756.bin
4b5eca065763b5017bec06bc415391b1e7a70b57d1b507e90092c2bd1b471946
pdf-font-stream PDF embedded font (sfnt) at offset 0x6756 13824 bytes