Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26f1a8df1bc3fb2…

MALICIOUS

PDF

46.0 KB Created: 2020-08-28 05:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56f6ff5fc625d1b0edb014b34f2b3a7c SHA-1: 24e251e8cca39b2503381f225d2dc1e6c4584f8f SHA-256: c26f1a8df1bc3fb24bb2605fecd76179f15ea31997679afb138bf3d8fd75cbca
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=closest+airport+to+auburn+maine', is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains this URL, suggesting the primary purpose is to lure users to malicious sites. No scripts were extracted, and the family is unknown due to the generic nature of the attack.

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.ru/pify?keyword=closest+airport+to+auburn+maine
    • http://jitaf.thebratsmovie.fxlda.com/uploads/1/3/1/4/131406149/4864551.pdf
    • http://vuworob.jeroenkoevoets.com/uploads/1/3/1/3/131383483/654fbc4f28cf.pdf
    • http://files.lillyzuckerman.com/uploads/1/3/1/6/131607029/bonezavuno.pdf
    • http://files.southernpointers.com/uploads/1/3/2/6/132695582/d512820f6b09d68.pdf
    • http://files.bi-radialmatrixintro.com/uploads/1/3/2/6/132683121/kefamuvivapetepuvato.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/87987114226.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/ubrs_rend_run.pdf
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/39099052331.pdf
    • https://cdn.shopify.com/s/files/1/0460/2472/0543/files/fishing_planet_xbox_one_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/back_propagation_neural_network_example.pdf
    • https://cdn.shopify.com/s/files/1/0438/1461/7250/files/2042034409.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/17914045614.pdf
    • https://cdn.shopify.com/s/files/1/0437/0835/0615/files/wezikemurusapegaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8017/9100/files/97517537079.pdf
    • https://cdn.shopify.com/s/files/1/0435/8720/7327/files/lofobofowoxido.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_off000068e1.bin
cde38f620c21de9ee9113d1768749bc4de2873b6364ba3a0bf093e8ddbda966c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E1 5012 bytes
font_01_sfnt_off000079c5.bin
e66569bb502865593fd80effae994597ba8946f7db246d1c5486e90185d1f727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C5 16072 bytes

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