Malicious PDF — malware analysis report

Static analysis result for SHA-256 486e0299e1caa974…

MALICIOUS

PDF

35.4 KB Created: 2020-08-10 14:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6f87872e4f0d8f7507b64a85a4254c2 SHA-1: a25eb88cbcdac5440204812800076520f2ff7457 SHA-256: 486e0299e1caa9746f9f40ffc42f17b8b1e925c861ec44cb721e2884606cef79
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, also contains URLs that are likely part of a link farm designed to lure victims to malicious sites. The primary attack pattern involves redirecting users to potentially harmful 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.cc/pify?keyword=thompson+alleluia+ssaa+pdf
    • http://files.tabernacleforashadow.com/uploads/1/3/1/6/131607331/2258327.pdf
    • http://files.lifelonglearningprofessional.com/uploads/1/3/1/3/131379544/3e0647d.pdf
    • http://files.ashleysandersonphotography.com/uploads/1/3/0/7/130740158/7888149.pdf
    • http://files.konjipikaron.com/uploads/1/3/1/4/131437889/7934079.pdf
    • http://riser.deliverancexorcisms.com/uploads/1/3/2/6/132683014/nolagifajovum.pdf
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/mumaful.pdf
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/nadidafolujew.pdf
    • https://cdn.shopify.com/s/files/1/0438/3817/7430/files/gusakuxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2841/4618/files/97124673011.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/zoology_notes_for_ias.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/resadegiputitiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/agriculture_bitbank_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3556/5978/files/litavekewujafotalive.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/dugid.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/data_analysis_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/68045591183.pdf
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/83024554358.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b15.bin
209cf99f3cc932b334b0f1df682f5c65b204ed24feb1a3f987018ba1d07ac46a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B15 5136 bytes
font_01_sfnt_off00005c68.bin
dee9e9317cbe84eb555bf5681297bd122a812196248bcd9fc57fe76459e645f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C68 10640 bytes