Malicious PDF — malware analysis report

Static analysis result for SHA-256 19fb1c352714346b…

MALICIOUS

PDF

46.0 KB Created: 2020-08-18 18:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7704a4f6ee6d973362097cf219017e1c SHA-1: f4ff40d75caef3d1d8e9c2c1bdc8bd3b4fb1af1a SHA-256: 19fb1c352714346bcf8d385e533e025470b053374c2c9753a3f92ff2bc825d46
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external websites. One of the primary links, 'https://ttraff.cc/pify?keyword=shrimp+fried+rice+nutrition+information', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this URL and other PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The presence of a malicious redirector indicates an attempt to deliver further malicious content or phishing pages.

Heuristics 3

  • 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.
  • 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=shrimp+fried+rice+nutrition+information
    • http://files.immlawcounsel.com/uploads/1/3/1/3/131398097/webebir_finepizezomoxor_rejuzavot.pdf
    • http://vabetiwa.benrosenblummusic.com/uploads/1/3/2/7/132710712/34000d301863.pdf
    • http://tetagadu.chilhowiechurch.com/uploads/1/3/0/9/130969559/vegade-kugemago-ximunexoxuxale-pisirivejejo.pdf
    • http://lonotir.toniblackmanpresents.com/uploads/1/3/1/6/131607600/gakoxawa-luxuvinazigaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/43342759793.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/molecular_dynamics_simulations_of_biomolecules.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/vidavurudunawi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/xalumenume.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76685421079.pdf
    • https://cdn.shopify.com/s/files/1/0433/3689/2584/files/jopugidaxuje.pdf
    • https://cdn.shopify.com/s/files/1/0433/9918/4551/files/buffers_in_pharmaceutical_systems.pdf
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/72377564760.pdf
    • https://cdn.shopify.com/s/files/1/0435/7334/6463/files/fundamentals_of_thermodynamics_6th_edition.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_off00006a76.bin
60ca57814eea1084cb684ed2934631dfcd171997b1b8bd9b13df84e9c2168c90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 5288 bytes
font_01_sfnt_off00007c4e.bin
1e823b29f64466eb7717e3c81c48afe60771d62aacf3cdc315a32975732bb22b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4E 15136 bytes

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