Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc26a24fa27184d…

MALICIOUS

PDF

41.2 KB Created: 2020-08-23 04:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d9d2b09a3ce2ac5d5c5a76e16e8cddd SHA-1: 1930918bb5aca8a7030fa764cf63dc4313fbf3c6 SHA-256: 6dc26a24fa27184d60232a43bad25b5fc37e79951b2e0f2989f64ba0114b6e31
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector service, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains the same URL and references to other PDF files hosted on Shopify, suggesting a link farm or content-luring strategy. The presence of embedded URLs and the critical heuristic firing for a malicious redirector strongly indicate a phishing or malicious redirection attempt.

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=kendo+mvc+grid+popup+edit+template
    • http://xofunom.moparsunlimited.net/uploads/1/3/0/7/130739579/8da065.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5382/6726/files/dejapubom.pdf
    • https://cdn.shopify.com/s/files/1/0428/8905/2316/files/zezomov.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/70844768768.pdf
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/bowizutuvuwaragise.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/49586124287.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/5513446056.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/ridasabavize.pdf
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/vidopite.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/blank_clock_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/butubosak.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/62565624226.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/multiculturalism_and_interculturalism_debating_the_dividing_lines.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005050.bin
3794a0812506868e7e50d688e152dab223960f52062efcc2f430a9cf96675867
pdf-font-stream PDF embedded font (sfnt) at offset 0x5050 5244 bytes
font_01_sfnt_off0000620c.bin
08379d7fdbf992aa2ea15a99fe4e00ae00e0d225bb7830ebb36fb4b9a3f2e1b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x620C 5988 bytes
font_02_sfnt_off00007273.bin
b48e532185fbdd2fdf42606d31132a590b533f73b9429f4a7043596d20c0583c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7273 10916 bytes