Malicious PDF — malware analysis report

Static analysis result for SHA-256 6065a56b368c0f5f…

MALICIOUS

PDF

35.3 KB Created: 2020-08-08 20:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e04f5167201090a4c154271ff882bca9 SHA-1: 955926774a6b979181fcdcf8d7c2ff72c84783ff SHA-256: 6065a56b368c0f5f84fffc56cea386ea99e34936a8c96a7a580c5082be7de769
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. The document body and embedded URLs suggest a lure related to a catalog, likely to trick users into clicking the malicious link. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination.

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=catalogo+o+boticario+ciclo+01+2020+pdf
    • http://files.strathewenhall.com/uploads/1/3/0/8/130874175/8305823.pdf
    • http://files.knightsofstpeterandstpaul.com/uploads/1/3/1/4/131438323/558eb.pdf
    • http://files.simplydivinesuds.com/uploads/1/3/1/4/131407812/23f3d849.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/60143830226.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/9949847508.pdf
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/66997156841.pdf
    • https://cdn.shopify.com/s/files/1/0429/9679/3503/files/21302566615.pdf
    • https://cdn.shopify.com/s/files/1/0435/4274/1143/files/red_cross_lifeguard_test_answers_2017.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6513/files/animal_farm_novel.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/vupazemubojumideros.pdf
    • https://cdn.shopify.com/s/files/1/0428/0025/1036/files/72433020464.pdf
    • https://cdn.shopify.com/s/files/1/0428/7725/5836/files/41516732249.pdf
    • https://cdn.shopify.com/s/files/1/0432/4415/9143/files/30562720054.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_off00004c44.bin
3753d2fc999a597a91adc9eef169de4e1d54fa8b459177157477b82bfe2785f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C44 5516 bytes
font_01_sfnt_off00005f14.bin
ad62edc65e5971eccaa5240471a898ed3db98965091ede7bab6200e68096f34d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F14 9936 bytes