Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ab290007cdacc2…

MALICIOUS

PDF

42.1 KB Created: 2020-09-01 22:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a355b4b83d4a3c5007ec6d1d0b361bcf SHA-1: 816014a3e31f5542ae3fc897f4c6c1ffc848f820 SHA-256: d3ab290007cdacc2f95af651e75033b406bc4201307592f27b3114255cfac32b
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=cake+decorating+tools+list+pdf'. This URL is presented within the document body, suggesting a social engineering lure. The PDF also contains a large number of external links, many of which point to benign content, but the primary malicious link is the focus. The ML classifier strongly indicates maliciousness.

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.me/wix?keyword=cake+decorating+tools+list+pdf
    • https://static.usrfiles.com/ugd/33c377_256ae2eaded74955a0f7c49468b62a32.pdf
    • https://static.usrfiles.com/ugd/32acb1_42a5b2a9b9cd40c786c28a8336ff10d8.pdf
    • https://static.usrfiles.com/ugd/fb5067_92a1990224ec4f498ae1c7261631af92.pdf
    • https://static.usrfiles.com/ugd/162fe6_008896ffd1ba4a578cab013bf98c4fbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0e9143163c9454885a7afaced1de5c3.pdf
    • https://cdn.shopify.com/s/files/1/0435/9094/2888/files/discord_rules_channel.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/harley_davidson_parts_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/23982468265.pdf
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/bhole_shankar_bhojpuri_movie_songs.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/worerapujudog.pdf
    • https://static.usrfiles.com/ugd/43d598_0ce512d0ecab4d209e04db3b496d6af5.pdf
    • https://static.usrfiles.com/ugd/b8c837_b139f2e832534566ba572c359f306460.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_off000066ad.bin
a3dd390dca44f3d8068eba2a042f6d5fa1407fecf2feb826e881c668cf44aafa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AD 5292 bytes
font_01_sfnt_off000078be.bin
ab2245c0efa3a9cf53373814ead8668785aee86e1335c6938e7d30d1be1c40e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BE 10244 bytes

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