Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1007e19746f332…

MALICIOUS

PDF

63.5 KB Created: 2020-08-04 21:26:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5167ddc4e2749b85a73e093f930fb742 SHA-1: 46a166ea723f62789b6cc5f1e56508407d308d68 SHA-256: ea1007e19746f3329d86cd27207166427c2fa85b29448131891cd6208a1823bf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to manipulate search engine results. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bacteriophage+therapy+pdf', indicating an attempt to direct users to harmful content. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

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.ru/pify?keyword=bacteriophage+therapy+pdf
    • http://files.wapentakeleeds.co.uk/uploads/1/3/1/0/131071145/812a40d6.pdf
    • http://files.bhspantherband.com/uploads/1/3/1/6/131606727/tebesar.pdf
    • http://files.jolenesphotography.com/uploads/1/3/0/7/130775342/5436687.pdf
    • http://files.mrbalwayscare.com/uploads/1/3/1/0/131070452/8167746.pdf
    • http://files.spitfirecloggers.com/uploads/1/3/0/7/130739616/583196.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/ruvufuwupozu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/41531406471.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/sumokeri.pdf
    • https://cdn.shopify.com/s/files/1/0433/8571/6886/files/satasolewoti.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/lidogizo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tulajemo.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9557/files/57290280041.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/44478364461.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/lawubokorakubunem.pdf
    • https://cdn.shopify.com/s/files/1/0440/0427/8422/files/32443545929.pdf
    • https://cdn.shopify.com/s/files/1/0435/3097/7431/files/sojaperodetixul.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_off0000bb4a.bin
3e1089c72cbd15b67c5ad2b8ae15f9b19d308ead09d0ab3e93c6c76225d879a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4A 5356 bytes
font_01_sfnt_off0000cd8a.bin
06576f860b5f347bb858888b2e3bf7a2fc8e2ec8e7cde80a9d779a9b1d17c949		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8A 10412 bytes

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