Malicious PDF — malware analysis report

Static analysis result for SHA-256 eceedc48b74b0d40…

MALICIOUS

PDF

97.6 KB Created: 2020-07-31 22:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a789c406a01cb854ddf2b581956ca64a SHA-1: 01ab1c92cb013d986158bd5cea0074fc2cc1de32 SHA-256: eceedc48b74b0d4089015e5bc5342daef1ca627da79b50982bc975324ab5ced0
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, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains the text 'What does enchantment mean' and the URL 'https://ttraff.ru/pify?keyword=what+does+enchantment+mean', suggesting a lure to a malicious site. The presence of a large link farm, with many links pointing to Shopify domains, further supports the attack pattern of obscuring malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=what+does+enchantment+mean
    • http://files.3technique.com/uploads/1/3/0/8/130814308/josizejososudalawu.pdf
    • http://files.friendsofmaxx.com/uploads/1/3/1/4/131407898/xepunumetuz_pamukel.pdf
    • http://files.northeastsocietyforvascularnursing.com/uploads/1/3/1/3/131379183/femafadavifo.pdf
    • http://files.chelledestefano.com/uploads/1/3/1/8/131856392/pamituzojazur.pdf
    • http://files.azra-india.com/uploads/1/3/1/4/131437064/9056093.pdf
    • https://cdn.shopify.com/s/files/1/0440/4638/5317/files/61765476283.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/65130715411.pdf
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/taraneva.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/pevutawakozitisufopatu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/gomuwefalerufagup.pdf
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/47902423127.pdf
    • https://cdn.shopify.com/s/files/1/0435/5411/1656/files/xalijikupevabuwikeno.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/87397323482.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/tavamino.pdf
    • https://cdn.shopify.com/s/files/1/0431/8711/0037/files/juliwuvabatibodirimegus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7897/5639/files/93266520281.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 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000d973.bin
9af2f8d53a628ce0895b5cacc5b1e81ca974a18ad8f7f00449d9a5f96182c1b3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD973 9616 bytes
stream_009_off00013493.bin
64dd222774d49c8868ecc6537d6890c47d180ceff20b1837fdb8bda19680e383		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13493 26220 bytes
font_00_sfnt_off00008852.bin
0d0bd4e8f3f1195a1cfaf643dd75b2c05c2ac5db9d54ec912adff0cce8bd82ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8852 12788 bytes
font_01_sfnt_off0000b29f.bin
26050a431be79f47ce95f0791201dc3dd55e503e7d0e23bc913d513eb4723212		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB29F 5064 bytes
font_02_sfnt_off0000c3bf.bin
ff8289fcab20b7b81f5dc7c47458689637225d7099c48932a46d6898d6123f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3BF 2656 bytes
font_03_sfnt_off0000cec6.bin
18b250f24057ce91e4a59b25c1eec79fa8b4d7e2cb9f6c0de02c7e032a072fd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC6 2328 bytes
font_05_sfnt_off0000f49a.bin
4be5274161998c05ea44decb61be585f53c9b2c805cbe1e08c230a876e9d633a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF49A 21752 bytes
font_07_sfnt_off0001641e.bin
f6d78b002c697c320a4c2dac8ff3ec451bb11c1a1bc532befe23a22e2fea51b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1641E 5160 bytes

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