Malicious PDF — malware analysis report

Static analysis result for SHA-256 de065971b318dc03…

MALICIOUS

PDF

41.0 KB Created: 2020-09-12 09:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69719ddca3a53734b9b669cab53eb264 SHA-1: 7d60f4dcce31d9cbda769a3c80f154a7c2f49318 SHA-256: de065971b318dc03bd32e1fdffdf60c28f65cb43d37c987d925e8ae8078369a3
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.club/pify?keyword=sinonimo+de+almacenar+informacion. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, but the embedded link farm is the clearest indicator of malicious intent. 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.club/pify?keyword=sinonimo+de+almacenar+informacion
    • http://files.whitneykimpton.com/uploads/1/3/1/0/131070872/xusodedavi_figozuw_muxujiliwekivi.pdf
    • http://fapefe.warmanddryuk.com/uploads/1/3/1/4/131453358/3598969.pdf
    • http://files.2319thestore.com/uploads/1/3/1/3/131398555/wojod-gizelaben.pdf
    • http://remavevan.en.skandiaorgeln.com/uploads/1/3/1/4/131438304/besasuso.pdf
    • http://wikemap.bsupolice.com/uploads/1/3/1/1/131164250/lorilavurapoxi_subolexekejovi_lupewoxi_teradiza.pdf
    • http://pifuwex.nc-consulting-enterprises.com/uploads/1/3/2/6/132681482/c62354242a70.pdf
    • https://cdn.shopify.com/s/files/1/0431/6908/7642/files/codeword_barbelon_danger_in_the_vatican.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3517/files/40286735841.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/50418590977.pdf
    • https://static.usrfiles.com/ugd/ab5adf_2644e4323c6f455681638b4b3588893b.pdf
    • https://static.usrfiles.com/ugd/4733ca_081442ddccbb4cd9bdfc70601de20867.pdf
    • https://static.usrfiles.com/ugd/296484_b96a4590fad44882aaa6ac9659cdbea4.pdf
    • https://static.usrfiles.com/ugd/0f9ef0_a798d8e7dd4f47a9b9b0761911e399c7.pdf
    • https://static.usrfiles.com/ugd/5a1791_24319b85739b49009f6d148de9de2e7d.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_off00005f48.bin
8a197b2f510b0c7a9768e3b29d102d3402fb68e7c3f7b7464ebac24307e2033c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F48 5092 bytes
font_01_sfnt_off00007082.bin
b23e229fa0fddf02e477a73aa17a4b15bd35ac1fc73c25184b3e3e26cf4d00b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7082 11368 bytes

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