Malicious PDF — malware analysis report

Static analysis result for SHA-256 6543edecdbf6ab5e…

MALICIOUS

PDF

100.4 KB Created: 2020-08-23 17:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac0bb317847b459250e73a0005a995e9 SHA-1: 16494063a434e40e8a8da2e60d00417c7afecffa SHA-256: 6543edecdbf6ab5ef1171de82e53dd665cfbc2559fcd0b43f2cc11c367dd18f1
162 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which is identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting a lure related to 'Alan Wake DLC Xbox 360' and the malicious URL. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this PDF is designed to lead users to harmful content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=alan+wake+dlc+xbox+360
    • http://files.accentuatescottsdale.com/uploads/1/3/0/9/130970023/6339818.pdf
    • http://files.fund-intent.com/uploads/1/3/2/6/132682565/kujobixevagozitej.pdf
    • http://files.sf-inked.com/uploads/1/3/0/7/130776046/pejezavo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/mulching_sheet_30_micron.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/11887921186.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/kewodebelonesaleruxolak.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/emails_that_start_with_m.pdf
    • https://cdn.shopify.com/s/files/1/0447/2075/0745/files/cartello_vietato_fumare.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdf
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/bizhub_c558_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/nazujibizotepefa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/lilakom.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/room_rate_discount_authorization_form_marriott.pdf
    • https://cdn.shopify.com/s/files/1/0436/6227/8809/files/buzuxutora.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/acceptance_and_commitment_therapy_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/pokikuranudujuritit.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_off00014c0b.bin
2d3eb607cf53fbfa6fd582afe4bf6cd0ea2adbf49de509baaf4dce24181dc739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C0B 5472 bytes
font_01_sfnt_off00015ecb.bin
37867fd5d9ab291046466b5116cb749af9fc5a921aaadcba30515bead133516e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15ECB 11376 bytes

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