Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a986e439da8f270…

MALICIOUS

PDF

73.1 KB Created: 2020-08-22 03:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ffa3bd5ad44d3abc7d8b223b4c4503d SHA-1: 600c22fb06bb70ea2f8f83a059f9dfef8c5b531c SHA-256: 6a986e439da8f2704220c4b36d2cbdc55f202631cfc92f24824e3beb7b942a06
194 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically pointing to 'https://ttraff.ru/pify?keyword=altendorf+f45+spare+parts+manual'. The document also exhibits characteristics of a link farm, with numerous external PDF links. Additionally, a heuristic detected a lure for clipboard command execution, suggesting an attempt to trick the user into running malicious commands.

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=altendorf+f45+spare+parts+manual
    • http://jutelujo.newyork-homeinspections.com/uploads/1/3/1/8/131871721/fobozelamu-ritapadisikoson.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1444/6489/files/52889205066.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/acertil_bula.pdf
    • https://cdn.shopify.com/s/files/1/0435/8874/7423/files/monoprice_maker_select_v2_upgrades.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/24407208801.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/lumaziji.pdf
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/john_deere_100_series_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/54317779424.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7227/files/mubomokevazozaga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/aide_android_java_ide_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/8871/4653/files/icy_veins_holy_paladin.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/fosumafirijupewilutures.pdf
    • https://cdn.shopify.com/s/files/1/0432/7827/0628/files/acls_pocket_cards.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/nuboworolijivovuno.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bea7.bin
69940fafb18f61fd5a914d7e0745c0ab6ab4e95b25ec730cf64b8592310c3382		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA7 5388 bytes
font_01_sfnt_off0000d0ef.bin
31d5a43334dd8fcad971075a5b097ec5b2a903e35810ce42c8ece032a5730a7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EF 15676 bytes
font_02_sfnt_off0001016f.bin
8084185a6d0dd841e6a8e7f4618a18907baec685aee5eef808b3d5298eec42d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1016F 16316 bytes

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