Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50fba70c3675d07…

MALICIOUS

PDF

44.4 KB Created: 2020-08-26 20:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70c7a19fde09840b2d542137f4cbab2a SHA-1: 5fed1fa4f670300a4860be760f5a265ae9c7c975 SHA-256: d50fba70c3675d0754b6770f7a74da4a2b5f09e839d2085bb29e2cf978df68ca
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, hosting numerous external PDF links, predominantly on Shopify domains. One of these links, 'https://ttraff.ru/pify?keyword=c%2527+est+si+bon+in+english', is identified as a malicious redirector. This suggests a campaign aimed at directing users to malicious infrastructure, likely for further exploitation or phishing.

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.ru/pify?keyword=c%2527+est+si+bon+in+english
    • http://zipejisuk.richmondbulldogs.org/uploads/1/3/1/4/131438110/d5edfa380.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdf
    • https://cdn.shopify.com/s/files/1/0438/4679/5414/files/maketutuxamekovofugamewix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0439/1315/0632/files/binomische_formeln_hoch_n.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/sabosifunumibawawar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/zonunikosepomu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7210/files/20112994034.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/89538747729.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/38695283412.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_off000072f2.bin
36e4804b8145ac13aafd9c7947a12d4cb95ac908207c5bd613da48759a063dd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F2 4720 bytes
font_01_sfnt_off000082fc.bin
e37f4e1c26fdf8a14795c9b72af548fedb3841630ce202eda1237d95abdf467d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82FC 10064 bytes

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