Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33558a795a5bdd5…

MALICIOUS

PDF

35.0 KB Created: 2020-08-21 06:52:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4566497f150a8cb552633bc936076baf SHA-1: dfb1bf27eaa1e132109f9f50233e64c20798f810 SHA-256: e33558a795a5bdd547480f7b5265481aa4558d25f44c30b155d17d132c780b0b
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 PDF files hosted on Shopify. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=yasin+sharif+apk'. This suggests the document is designed to direct users to malicious infrastructure, likely for further exploitation or phishing. The presence of a link farm is a common tactic to obscure malicious intent and potentially improve search engine ranking for malicious content.

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.cc/pify?keyword=yasin+sharif+apk
    • http://rolexunog.chmsib.com/uploads/1/3/0/9/130969186/ranesuxesigux.pdf
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/nafezegavona.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/61403152779.pdf
    • https://cdn.shopify.com/s/files/1/0439/0069/8792/files/6474419579.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/60205533034.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/48761727257.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/delawen.pdf
    • https://cdn.shopify.com/s/files/1/0457/8669/3798/files/nz_asthma_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0461/4950/1091/files/burning_series_er_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/3434752236.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegegezanonipilupe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/15242524862.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/xepabiridutojuzo.pdf
    • https://cdn.shopify.com/s/files/1/0448/8675/3447/files/vidmate_latest_version_2019_apk_free.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_off00004c7c.bin
02499141ac723d39a417dc3c18b0ca03655e7d53f2421093edc0c0f6e7674d7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7C 4980 bytes
font_01_sfnt_off00005d60.bin
5247a2db38b043e0a6d46dd3a77ff7bf0881662a6888bd0dcc2fcd3002b31d62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D60 9996 bytes

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