Malicious PDF — malware analysis report

Static analysis result for SHA-256 a01ae0729b31f528…

MALICIOUS

PDF

38.3 KB Created: 2020-08-22 11:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b86495f4dea2412394fb5af5fe2e5940 SHA-1: 48752e8b41a926586d995d8b5c29deadb35cad38 SHA-256: a01ae0729b31f528e969285af8851331b0949f97b5ff83830738b898b57d5830
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a reference to 'amazing bible timeline pdf', suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm designed to attract traffic, with the primary malicious URL being the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=amazing+bible+timeline+pdf
    • http://ximenober.cleocork.com/uploads/1/3/1/4/131406744/rutup.pdf
    • http://kitepara.tetpaulnaturetrail.com/uploads/1/3/1/6/131637284/vuxis.pdf
    • http://mezivojeg.nicholastoddshumate.com/uploads/1/3/0/7/130775934/debimebopobadamomop.pdf
    • http://files.sanctuaries.org/uploads/1/3/1/8/131856443/jebegesogitesol.pdf
    • http://files.carolgrice-curran.com/uploads/1/3/2/6/132682731/10cf83acf2c.pdf
    • https://cdn.shopify.com/s/files/1/0434/8195/6518/files/example_of_business_plan_for_coffee_shop.pdf
    • https://cdn.shopify.com/s/files/1/0457/5743/1964/files/contemplate_tagalog_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/63608544129.pdf
    • https://cdn.shopify.com/s/files/1/0439/5443/8302/files/detective_conan_last_episode.pdf
    • https://cdn.shopify.com/s/files/1/0438/6285/1749/files/best_annotation_ipad_apple_pencil.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/43585775091.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3486/files/focused_antenatal_care.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/wolisinepevotofevinafuti.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/40200877964.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/79997948602.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/3630459163.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7668/files/36092808007.pdf
    • https://cdn.shopify.com/s/files/1/0428/0634/5895/files/binary_bot_2018_free.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_off00005752.bin
364d5c7680be1693e975a5b64744555fcadd9c90d24fa11fdc2bff3aade08ce0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5752 5264 bytes
font_01_sfnt_off0000692c.bin
84510fed81b50f1e34831b766d0338e55657640ce5283c7724c35cfca32056bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x692C 10232 bytes