Malicious PDF — malware analysis report

Static analysis result for SHA-256 f249093a055b8524…

MALICIOUS

PDF

48.0 KB Created: 2020-07-31 07:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d87ff7e1c0b9d4323fde8c8ef530be8e SHA-1: f92b02f1e12de10948df55c168ec125636fad99f SHA-256: f249093a055b8524ff7257aed277c135de53e9789e02b819436f3d9786d28f15
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a translation service. The document body, though heavily obfuscated, contains text related to translation, reinforcing the lure. The PDF also hosts a large number of links to other PDFs, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the primary malicious activity is the redirection to a harmful URL.

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.com/pify?keyword=traduction+document+pdf+anglais+francais+en+ligne+gratuit
    • http://files.polyroidcattery.com/uploads/1/3/0/7/130775830/juxojev.pdf
    • http://files.art-of-jen.com/uploads/1/3/0/8/130874593/sawuberad-sixugalegixudi.pdf
    • http://files.jarrodvanderryken.com.au/uploads/1/3/0/7/130776073/4288296.pdf
    • http://files.immaximized.org/uploads/1/3/0/7/130775172/7faa0.pdf
    • http://files.jarrodvanderryken.com
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/86773948631.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/revefup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96704933611.pdf
    • https://cdn.shopify.com/s/files/1/0439/6836/4702/files/61612146000.pdf
    • https://cdn.shopify.com/s/files/1/0431/2511/2994/files/97611770561.pdf
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/zurosipixupagofudalajisif.pdf
    • https://cdn.shopify.com/s/files/1/0436/2646/3385/files/bifanovegoma.pdf
    • https://cdn.shopify.com/s/files/1/0436/6345/8457/files/xesatomagisijakofabo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/30324608956.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nifafujejugafux.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/vizurufa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8947/7278/files/mugibofomotikunokamir.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/goberuporilexeje.pdf
    • https://cdn.shopify.com/s/files/1/0437/6910/2485/files/wujuwozawijomozixizix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.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_off00007946.bin
2b9abf01e34f8caccf1644834d8100e45d579dce75cf8f41d719b83105861094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 5304 bytes
font_01_sfnt_off00008b30.bin
f055f33e2d5e4cbfbe5102d01a2c465b5130aefb9374fd4bb3cb04eed5726aca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B30 11552 bytes

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