Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa47552e907a929…

MALICIOUS

PDF

43.5 KB Created: 2020-08-07 03:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b2caefcd87316a7e14f557d16c03165 SHA-1: de815543fa23951692f3ae6c4dd4a9df875691e5 SHA-256: bfa47552e907a9298a6670e77bacbd806a01fb175cb842ccb873a78506b7d335
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.ru/pify?keyword=complete+pet+pdf+vk, points to known malicious redirector infrastructure. The document body appears to be malformed or contains obfuscated text, but the presence of the link farm and the malicious redirector strongly indicate an attempt to lure users to malicious sites.

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=complete+pet+pdf+vk
    • http://files.applefarmcommunity.org/uploads/1/3/0/7/130776110/pubuwolalu_tagunusufinujav.pdf
    • http://kajujo.jgaudioproductions.com/uploads/1/3/0/8/130814328/acc919b7d.pdf
    • http://files.43designworks.com/uploads/1/3/0/9/130969339/9081679.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0437/6346/6391/files/bawobivekusigawubafuvudob.pdf
    • https://cdn.shopify.com/s/files/1/0435/0980/9318/files/quick_sort_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0434/7222/4421/files/53919134772.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/anaconda_prompt_commands.pdf
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/51935791465.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/ruribijibivuserit.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8093/files/cumc_outlook_email.pdf
    • https://cdn.shopify.com/s/files/1/0437/3112/4385/files/semakaruwewopuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/64107256897.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4294/files/consultant_appointment_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1333/files/la_carte_du_monde_avec_le_nom_des_pays_pdf.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_off00005ff5.bin
d9f4819a1e94c038e7c26eb0623ca1e891541ae8128f438978b6c5d97782f3a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 4732 bytes
font_01_sfnt_off0000700b.bin
99850187bf7d7166c51cd51db184594327aa656e275fd799a03a2e6c55f37227		 pdf-font-stream PDF embedded font (sfnt) at offset 0x700B 15948 bytes

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