Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c63db02b148da3…

MALICIOUS

PDF

60.0 KB Created: 2020-08-14 08:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78874ddf19304dbc2b2a03c83f3124e9 SHA-1: 03a599df0e9ce3c0b1ebec0e2e0a8564ce1d8165 SHA-256: 67c63db02b148da300726285b8e64873ab22e712b85c6e3b3761bf063fd968cd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document also includes a lure to copy/paste content into a command-line interface, suggesting an attempt to trick the user into executing commands. While no scripts were directly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/pify?keyword=sqlite++windows+8
    • http://zoxiwuj.westcorkbeekeepersassociation.com/uploads/1/3/1/6/131606027/povubarifeve-bezefirovefake.pdf
    • http://files.wrestlingjerusalem.com/uploads/1/3/1/6/131637136/zibotaxogi-wedewor-tukatibo.pdf
    • http://files.uniontemplefwb.org/uploads/1/3/1/0/131071157/lubiful-durojilasuxigom-sesemov-wekijoja.pdf
    • http://dagefetu.sahja.org/uploads/1/3/1/0/131071057/latejonafofumawunire.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/3177/9733/files/astronomical_terms.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/us_map_with_cities.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/pupotobekixunavumarizo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/45484671803.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/buvorokilopewud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/jisur.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/48840458245.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/95275397872.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5276/files/66486179881.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/integral_calculus_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/tofesarup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52244446143.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/35835967405.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008445.bin
dc2ac46cd74bdfa181a3779c65aefd5e69ee2cd3d2ebf8a68056da21bf69abe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8445 4816 bytes
font_01_sfnt_off000094bf.bin
e50edf0285a6af1dc381d9cd8e83ef2c8bda1fc0bd4bfcc1d272685b2c999fbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94BF 13152 bytes
font_02_sfnt_off0000beca.bin
d5c1d73facc1ee30369663d5bc9e1d56b1b6bad2d1eb0652642bc5daa7bdf87b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBECA 16352 bytes
font_03_sfnt_off0000d454.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD454 4324 bytes

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