Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6c6c1fcf7f0330…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 22:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0223fd49ce112e687958ca6b43822485 SHA-1: 30a5adfad4f3bdc459a00818b569f4f617fc0b32 SHA-256: ec6c6c1fcf7f0330db7a2ff4ef415ec4cfeaa342238033268e74b1aa47671e5c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary redirect URL is `https://ttraff.com/pify?keyword=contemporary+worship+songs+chords+pdf`, which likely leads to a malicious site. The document body, though heavily corrupted, also contains this URL and other PDF links, reinforcing the link farm attack pattern.

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.com/pify?keyword=contemporary+worship+songs+chords+pdf
    • http://files.ashwoodfertilitycare.com/uploads/1/3/2/3/132302859/voxuvukutixoti.pdf
    • http://files.roamwithray.com/uploads/1/3/1/0/131070327/c4b5adf6d62e47c.pdf
    • http://files.northerneventrentals.com/uploads/1/3/1/0/131069863/zurozufulimivif_bowalunu_sixorisame.pdf
    • http://files.sevenwondersofwashingtonstate.com/uploads/1/3/0/7/130776599/jutukekilipim_baxosizetapefow_sexuv.pdf
    • http://files.nataliecummingssoprano.com/uploads/1/3/1/4/131407089/11146.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9604/files/kijamabopenofediburos.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/sumbangan_kerajaan_abbasiyah.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/437888790.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/41154278188.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/fupovoguvafakususinoboze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71895705060.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/fuwokubewezuvuxija.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/55830587762.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47475247643.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/aws_solution_architect_exam_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/article_370_advantages_and_disadvantages_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0143/6566/files/lirubutifeleb.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_off000062cb.bin
4ee1d61e4fba28fe7638e7ac7761811f9571fce85a10580bcfdfcc38765c0855
pdf-font-stream PDF embedded font (sfnt) at offset 0x62CB 5636 bytes
font_01_sfnt_off000075e1.bin
989806cfe1b221fd446d3120da549f7ed867ca708951171852f64e70a14afc19
pdf-font-stream PDF embedded font (sfnt) at offset 0x75E1 9808 bytes