Malicious PDF — malware analysis report

Static analysis result for SHA-256 badf6189a78252c1…

MALICIOUS

PDF

49.8 KB Created: 2020-08-17 10:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b787c9b21a74a0a09c9129698fa4cfb1 SHA-1: 5956bad5e57ae45277a798003819fca596c307b7 SHA-256: badf6189a78252c17a79a4841b407d7efefe4038c0ec931fe07b4ac0084fac96
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=best+bluetooth+keyboard+for+tablet+android, which is likely used to redirect users to a malicious site. The document body contains a mix of seemingly benign text and URLs, but the sheer volume of embedded links, many pointing to external resources, strongly suggests a malicious intent to lure users to compromised or malicious destinations.

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.ru/pify?keyword=best+bluetooth+keyboard+for+tablet+android
    • http://files.lifeclickscoaching.com/uploads/1/3/0/8/130874593/8128f8.pdf
    • http://files.kristynlanggundlach.com/uploads/1/3/1/0/131070702/laloloxepifo.pdf
    • http://files.lowersavannahriveralliance.org/uploads/1/3/1/4/131407178/3fba4c940e7196e.pdf
    • http://files.bereanwest.com/uploads/1/3/1/8/131871439/c534ceb34.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxumadebamapetutorobegew.pdf
    • https://cdn.shopify.com/s/files/1/0437/8296/3349/files/18855913155.pdf
    • https://cdn.shopify.com/s/files/1/0429/6658/1407/files/16957866667.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/sims_2_double_deluxe_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/kobebisomupapuveke.pdf
    • https://cdn.shopify.com/s/files/1/0433/1061/2635/files/78183251032.pdf
    • https://cdn.shopify.com/s/files/1/0437/0422/1849/files/37413584677.pdf
    • https://cdn.shopify.com/s/files/1/0436/1119/3501/files/facebook_networking_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/9080/4893/files/79615462317.pdf
    • https://cdn.shopify.com/s/files/1/0435/9690/6659/files/sad_cartoon_images_hd.pdf
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/15439235652.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5395/files/oxford_advanced_learner_s_dictionary_9th_edition_international_student_s_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/nebevokedotigawedono.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_off0000850f.bin
0bb73a2031b5425523208afa468ca4c4b50bec2e904d2e963a9277b8fe93300f
pdf-font-stream PDF embedded font (sfnt) at offset 0x850F 5352 bytes
font_01_sfnt_off0000973b.bin
782c6e8a94957e0b00c9bf388336303adaf1fb887ed1106b1c841f87c7b388f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x973B 10012 bytes