Malicious PDF — malware analysis report

Static analysis result for SHA-256 03685c03583695e6…

MALICIOUS

PDF

42.1 KB Created: 2020-08-03 00:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 318679a10e6154572593a3cff4dcb2fe SHA-1: 81ad7d7bdbeafd350c4a2dca255c16125719dae4 SHA-256: 03685c03583695e6ab8cc1b005241931bbbf585b789f4e90940537faf9551bb3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a primary link to 'ttraff.com' that is flagged as a malicious redirector. The document body and heuristics indicate a lure related to payment changes or 'Western Union hacking', suggesting an attempt to trick users into clicking malicious links. The presence of multiple PDF links, many hosted on Shopify, further supports a link-farming or redirection strategy.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.com/pify?keyword=western+union+hacking
    • http://files.hirowheels.com/uploads/1/3/2/8/132814791/mapixukixujovujexesa.pdf
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://files.haywardfitnessfanatics.com/uploads/1/3/1/3/131379971/5150538.pdf
    • http://files.brightstonefarm.com/uploads/1/3/2/6/132696063/fc519.pdf
    • http://files.wellingtoncricketclub.com/uploads/1/3/1/3/131378791/fozufoj_ruwezed_pitibiradata.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/86272930791.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2714/files/47670971415.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/61547318866.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/jowixefupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1837/0728/files/kupodilimifezuruxefe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/xemaromisasidusonexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/89213637822.pdf
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/rawezefudutiduwuvos.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/carbuncle_cottage_walls.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5526/files/jisoxut.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/degifuwad.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/livafowepe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/9786237948.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_off00006559.bin
7851f50ea21aa845fb5447cb96963253de6c7cf5629726f3670d601bdfaf324b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6559 5104 bytes
font_01_sfnt_off000076c1.bin
40a1d20c6dc1dbc5040a469fc901f0b645bc95b6adc3a7203ec10b0a087daa28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C1 10820 bytes

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