Malicious PDF — malware analysis report

Static analysis result for SHA-256 6454884830b3e792…

MALICIOUS

PDF

42.6 KB Created: 2020-09-01 02:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fac41f1e8618a745a0cb7e0b795ca54 SHA-1: 975cfa0ffcef1f6868726d25ea1b6d596dc44cc5 SHA-256: 6454884830b3e7928bf17b6619136d33b2e95478dffc8289af198caea7568915
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=classic+wow+fire+mage+leveling+guide, which is likely intended to lead the user to malicious content. The presence of many external PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.ru/wix?keyword=classic+wow+fire+mage+leveling+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/4bdc6d_88a3223d5892449cb4d05cf0d8893727.pdf
    • https://static.usrfiles.com/ugd/234f58_a5ad85e04fd6457d8c3d07e0255e03c0.pdf
    • https://static.usrfiles.com/ugd/d5415a_d077a5424cb8427dbf550891c847988f.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_d70bf74d28fd41299699c68081d70721.pdf
    • https://static.usrfiles.com/ugd/ca300b_763d19419e0c4de8b2899d17445f2b99.pdf
    • https://static.usrfiles.com/ugd/3bcfef_463aa5260e2c4ee1ba089da60b4741f3.pdf
    • https://static.usrfiles.com/ugd/3f80ec_9163ce7ca4e24b6b9bad13e690d6c7d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_de519511f77a4c08a3ccf7fc9737d993.pdf
    • https://cdn.shopify.com/s/files/1/0437/7808/0919/files/zivuvelurulutorozotimuza.pdf
    • https://cdn.shopify.com/s/files/1/0432/2587/4600/files/49499870835.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zorugeligix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/nemojebojunuwubuwix.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/90186811017.pdf
    • https://cdn.shopify.com/s/files/1/0431/9694/0448/files/the_purge_2_imdb_parents_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000689c.bin
caa15045f351a12674bae6f1fc8709a7433383ad4549bd080af0ae0bdab4d431
pdf-font-stream PDF embedded font (sfnt) at offset 0x689C 5400 bytes
font_01_sfnt_off00007afa.bin
bf7f466608a36975e165d473f5f1431c671907ea2b6de0a81e54eb0e072c3f3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFA 10100 bytes