Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a992068be9dfa53…

MALICIOUS

PDF

32.1 KB Created: 2020-08-02 23:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58ed0ef3d78a126f004c599ea4fed013 SHA-1: 8309cebf34cd28effff1dde08635ebced2c91fe7 SHA-256: 1a992068be9dfa53161a615630b8e953874fe521fc23db3d62edbeda461da9c5
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for 'Accuweather rochester mn'. The document also functions as a link farm, embedding numerous other PDF links, many hosted on cdn.shopify.com, likely for SEO poisoning or to obscure the malicious redirector. No scripts were extracted, but the primary malicious activity is the redirection to the ttraff.com URL.

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=accuweather+rochester+mn
    • http://files.loveaffairwiththyself.com/uploads/1/3/2/7/132712234/xarizesus.pdf
    • http://files.yogawithsaraa.com/uploads/1/3/1/3/131383462/3454973.pdf
    • http://files.finstofeatherstaxidermy.com/uploads/1/3/0/7/130740118/f4ec7a9e5efcb.pdf
    • http://files.boultonsarenasandgallops.co.uk/uploads/1/3/1/4/131453735/bd4d1645ae99.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/10743782181.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/kalemakojisutufefolub.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/5290096284.pdf
    • https://cdn.shopify.com/s/files/1/0429/8765/1235/files/wixulepefifepezaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/10233605820.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/24839363859.pdf
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/milixamizurapare.pdf
    • https://cdn.shopify.com/s/files/1/0434/9440/8357/files/vugefatasasefaniriba.pdf
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/vilaxubivisazivawaruvom.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/fofovazedifegog.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9651/files/bazuzexukunibonez.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/bakemefoviwud.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_off000043ea.bin
aa8cf78fa1459afda553314c5b743c1a461e39c3a18033d011c671a8e38a640c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43EA 5088 bytes
font_01_sfnt_off0000551f.bin
d91667d90a78d968858fdf925b42af5e839c3690f4da97b60666f3e83ead1ac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x551F 9024 bytes

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