Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee24443cf4687c24…

MALICIOUS

PDF

40.7 KB Created: 2020-08-05 17:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7aa1f86baf4b2390000797d1ba972ab SHA-1: 304687a96a8fc7f5a099b08e30e38b65346ad34f SHA-256: ee24443cf4687c240ea6ffd59678b8b75fc87f46f63d2aff03e2d5bed428b5f6
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that appears to be a lure for 'abbyy pdf transformer'. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The ML classifier strongly indicates maliciousness. The primary attack vector is likely social engineering through deceptive document content and malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=abbyy+pdf+transformer+3.+0+full+t%25C3%25BCrk%25C3%25A7e
    • http://files.castpartynyc.com/uploads/1/3/1/4/131438111/xabejexakinugugoboz.pdf
    • http://files.rocktherun4mda.org/uploads/1/3/1/4/131453276/kulitifugivelapivozi.pdf
    • http://files.beexploration.com/uploads/1/3/1/6/131606954/gijimurukuguwer_wesaro.pdf
    • http://files.lmchurch.ca/uploads/1/3/0/8/130874284/lebakuxaguzopud_pigemebewav_litupir_tumupon.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/70819152271.pdf
    • https://cdn.shopify.com/s/files/1/0431/6846/5053/files/nudanasomewuburut.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/14661950544.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/pedodorisedarefexu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7287/0807/files/fumubob.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/airtel_dth_plan_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/1812/5465/files/central_alpherafs_com.pdf
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/laworemixox.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/63605197529.pdf
    • https://cdn.shopify.com/s/files/1/0428/2223/8374/files/dr_cindy_trimm_healing_prayer.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/58674136580.pdf
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/ordering_fractions_from_least_to_greatest_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/jufuvagenona.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_off000056d0.bin
93d718cf4ce21d3e50282d13fa1a5fa312bf7e2c987f042bbff2055a650f0138		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D0 6124 bytes
font_01_sfnt_off00006b63.bin
9cec2dc97e216d32a19018bf3efea1080489ecceb84fce4516a0e98dbdb3b2de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B63 12836 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.