Malicious PDF — malware analysis report

Static analysis result for SHA-256 f37def95e13589d1…

MALICIOUS

PDF

41.5 KB Created: 2020-07-31 23:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a2914495cb6ee21f100f55278ae3b21 SHA-1: 1ca55b10da6bf852b84f8c606594f2ee78c9040b SHA-256: f37def95e13589d1d3067342d91bb066cec3876d21a8272a47d9dc6a6bcd1ac7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.com/pify?keyword=overwatch+additional+command+line+arguments. While the document body contains garbled text, the presence of numerous links, including one pointing to known malicious infrastructure, strongly suggests a phishing or malware delivery attempt. No scripts were extracted, limiting the analysis of specific execution chains.

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=overwatch+additional+command+line+arguments
    • http://files.amyhouts.com/uploads/1/3/1/3/131379439/wamusukamu.pdf
    • http://files.gatheringofthetimes.com/uploads/1/3/0/7/130740502/sifav-fokov-bafasazeseji-fuzis.pdf
    • http://files.shop-matte.com/uploads/1/3/0/8/130874055/mutodus.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/54679015417.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/54339863143.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/zogofenimunif.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/42987615854.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/5897771802.pdf
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/dekiwudawifurejademe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/82066641736.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9363/files/gepirese.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/21182461611.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_off0000630a.bin
c56472b89fd6d994768c863cf85f17748da82ff279c5f43a0c5fb66c44893e80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630A 5532 bytes
font_01_sfnt_off000075c3.bin
5ebe2c4c9dd28f2d4b339b548ea35933b466b7396aa389ef0f76dc6d86ea92cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 10580 bytes

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