Malicious PDF — malware analysis report

Static analysis result for SHA-256 482568ab37c98ba6…

MALICIOUS

PDF

55.8 KB Created: 2020-08-03 09:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97f6c1f753e0e8d0f3afa82c1c283c99 SHA-1: c6fd379a56ff5409da25046783edf25f4bdb63b1 SHA-256: 482568ab37c98ba65ce0d1fcba7f06bacbb56a090d5091b2f605b958777df414
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to a malicious redirector, ttraff.cc, which is disguised with a game-related keyword. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to Shopify domains, likely as part of a link farm to improve SEO for malicious content. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=risk+of+rain+2+sticky+bomb
    • http://files.meilensteinwein.ch/uploads/1/3/2/8/132814935/fefimefekafiruwixo.pdf
    • http://files.studio-luxe.com/uploads/1/3/0/7/130738889/figafipa.pdf
    • http://files.jaidetimmgarcia.com/uploads/1/3/2/6/132695663/zomigizasaga_suluvikima.pdf
    • http://files.vfpbellingham.org/uploads/1/3/0/7/130739758/gugawikexina.pdf
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/pawutivusabazezufasonutij.pdf
    • https://cdn.shopify.com/s/files/1/0429/2503/1587/files/53796396173.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/fuvolu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/gominegoviwemokub.pdf
    • https://cdn.shopify.com/s/files/1/0435/2684/8661/files/30890273042.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/94817458023.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/14198875221.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/25659966979.pdf
    • https://cdn.shopify.com/s/files/1/0433/8873/1543/files/lijimov.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/wukepazobibaler.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6924/files/twitch_keyboard_shortcuts.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/26014875563.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/31630797236.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/98478747866.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_off00009ddc.bin
a0d32f5b7d0b14c7b747fa72af193b6cd860095d9d69371081c04efd09307e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDC 5440 bytes
font_01_sfnt_off0000b059.bin
5e7da3b4b98c3b4c7d03f4bbb0c0cda5807eaf45608eb97259e8238554d261a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB059 9908 bytes

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