Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6f25a09ab65b15…

MALICIOUS

PDF

39.4 KB Created: 2020-08-24 04:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81a98fe828a421087c70db3bc459e656 SHA-1: ddb0c4de24074845848a1e925509bc15aa096035 SHA-256: 1b6f25a09ab65b15a737c2f1c7f5abc8dc22746e15a9f322a14d1d5b522c4e00
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 of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting the primary purpose is to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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=arranging+numbers+from+least+to+greatest+pdf
    • http://pusude.sandraleader.com/uploads/1/3/1/6/131637830/dc0af.pdf
    • http://files.911bodyresq.com/uploads/1/3/1/4/131453463/a05de49ed1a.pdf
    • http://files.taylorjordanusa.com/uploads/1/3/1/0/131070718/raketamowadazil_fetotugo.pdf
    • http://files.completedentistrystudio.com/uploads/1/3/2/8/132815767/lilepibivojusede.pdf
    • http://files.mthoodcustomhomes.com/uploads/1/3/1/8/131856212/649695.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/47612062973.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/biblia_de_jerusalen_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/sugewidabej.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/zivotufewepubixetefexewa.pdf
    • https://cdn.shopify.com/s/files/1/0446/7389/2515/files/five_stages_of_grieving.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/21126208627.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/bejusadugogupo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/59248737853.pdf
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/74263936789.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4182/files/asking_formal_questions_in_english.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_off00005a22.bin
2c8a1a213309c05262e0da47442b6db3bb5f01e0a8cad9d33a6f2df8e18d1fc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A22 5492 bytes
font_01_sfnt_off00006ca9.bin
e96f11563f74f694873ecc232f84b894b3b0610c8247e6c0c44523f3400c3011		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA9 10476 bytes

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