Malicious PDF — malware analysis report

Static analysis result for SHA-256 6beba782c999524b…

MALICIOUS

PDF

42.3 KB Created: 2020-08-07 00:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a14fe26a1059fa1fbf3f4e20acd1950 SHA-1: d828023be000f9c33281bb0c89c0b30f782d7c81 SHA-256: 6beba782c999524b51ad9d8dfa452516d0cfc5567b2f76660273aeb7c2b8b803
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a known malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'mobile banking system project PDF', aligning with advance-fee scam tactics. The presence of multiple external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or redirect users to phishing 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=mobile+banking+system+project+pdf
    • http://files.liladala.com/uploads/1/3/0/9/130969080/vojixosevakoweb-mevajotaj-faxufuvud.pdf
    • http://files.harvieherrington.com/uploads/1/3/1/4/131482878/5cc895e.pdf
    • http://dubiwipil.sidusnova.com/uploads/1/3/0/9/130969723/sazewener.pdf
    • http://files.greencambridge.org/uploads/1/3/1/0/131070918/4156049.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6806/3895/files/luvifesasaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/5804/3807/files/vukebudesomafojo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/75646648606.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/86084321017.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/65938708685.pdf
    • https://cdn.shopify.com/s/files/1/0435/7003/6904/files/46488134846.pdf
    • https://cdn.shopify.com/s/files/1/0437/1723/0741/files/47182852889.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9275/files/isometric_exercise_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigazisamakolomomabixefox.pdf
    • https://cdn.shopify.com/s/files/1/0431/1157/9809/files/masuzavuludasabux.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/tolomasugotepodolekumu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/40223489445.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_off00006516.bin
97a136975b6e2da9512943976a6e185e29f1387679e77dd3e42d01d4aad16b11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 5864 bytes
font_01_sfnt_off0000790e.bin
fec7267c509c6c5bf7d8ef606ea4be5c339f77532751b95b0b55fd9cc442112c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x790E 10320 bytes

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