Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b348679115a2c0…

MALICIOUS

PDF

42.2 KB Created: 2020-08-14 21:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80efd35b135197e3944745ab12b35cab SHA-1: 338aeb20a4d2813a1aef85521d107902f0430881 SHA-256: d6b348679115a2c0f48f0d3055ab8436bc76b8d11ccac99432bc4bce1495b989
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is associated with a lure for 'online games for android'. The document also contains a PDF link farm heuristic, indicating a large number of outbound links, many hosted on shopify.com. The primary malicious IOC is the redirector URL, which likely leads to 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.com/pify?keyword=online+games++for+android
    • http://vubarasif.dgdriver.com/uploads/1/3/0/9/130969090/7f9b88a9aa6de.pdf
    • http://files.barbwiresaddlery.com/uploads/1/3/2/6/132695445/5d56a3a0e.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6240/files/84811768587.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/40529826622.pdf
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/93000060478.pdf
    • https://cdn.shopify.com/s/files/1/0433/0225/6795/files/57489535246.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/nusenur.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/97244467866.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/13483407728.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/23830769993.pdf
    • https://cdn.shopify.com/s/files/1/0433/0618/8955/files/minecraft_pocket_edition_0._15_0_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/6481/8838/files/isometrico_e_isotonico.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_off00006701.bin
11d69342255623946854574f1b91fcc7d2708d5cbb0df12313a0c0c0cb64599b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6701 5256 bytes
font_01_sfnt_off000078c9.bin
f57e2c6f8e6de1642088ff38767bbb2060e148b3dd52ce36e601f8ce1a40cd62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C9 10260 bytes

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