Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf5980810166dc9…

MALICIOUS

PDF

77.6 KB Created: 2020-08-31 09:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0b155702ea844c257ea0ed2e72f3fbf SHA-1: 9acaf0f895d5ab076e26578023e00383eecf2df2 SHA-256: abf5980810166dc9eea471bdb59a0ffdffaaa22a462d47fabf7bfdac06393237
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, many pointing to Shopify domains, suggesting an attempt at SEO manipulation or link farming. Crucially, one embedded URL, https://ttraff.club/wix?keyword=best+animal+companion+pathfinder+kin, is identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector and the link farm strongly indicate a malicious intent, likely to lead users to further malicious content.

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.club/wix?keyword=best+animal+companion+pathfinder+kin
    • https://cdn.shopify.com/s/files/1/0429/7572/3673/files/after_effects_free_cs6.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/printable_address_labels_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/5973/9814/files/vusujogodaxizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6176/files/laxexif.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/40391872553.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3992/files/dididizokazil.pdf
    • https://cdn.shopify.com/s/files/1/0448/9697/7051/files/alphabetical_list_of_us_states.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/wumasobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/49498356695.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/watch_movies_2k.pdf
    • https://cdn.shopify.com/s/files/1/0446/7677/6089/files/juduzibutibil.pdf
    • https://cdn.shopify.com/s/files/1/0430/5666/0633/files/suzido.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/xujugas.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/888429155.pdf
    • https://cdn.shopify.com/s/files/1/0465/1519/1958/files/eclipse_js_formatter.pdf
    • https://cdn.shopify.com/s/files/1/0454/5609/7432/files/70645481249.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4f3.bin
7807e45527d4955d07fd68cd4a3a2783c6810aef6560370809f896feaf7771a6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F3 5296 bytes
font_01_sfnt_off0000f6bb.bin
6bc453472712a7ef61ef6edd87ad9f33eacf4f0615f0b32f3dc6e996d8be91ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BB 10528 bytes
font_02_sfnt_off00011ada.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x11ADA 4324 bytes