Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5fa58df50ddf727…

MALICIOUS

PDF

37.0 KB Created: 2020-08-02 10:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cdbe8badebf7318d37973ac12bab753 SHA-1: 783c6c981e237d50e8f29225041e141424187fde SHA-256: c5fa58df50ddf72787def45ebf6e3ba2054cdee9290a5dbac6aa698f77caf84f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning attack designed to redirect users to malicious content. The document body contains garbled text along with the malicious URL, indicating a potential attempt to disguise the malicious intent. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=malayalam+kambi+kathakal+pdf
    • http://files.davewaite.info/uploads/1/3/1/4/131437889/c402d03f6ec00.pdf
    • http://files.twobitranchphotography.com/uploads/1/3/1/3/131397973/nupiradofarivo.pdf
    • http://files.hyperformancellc.com/uploads/1/3/1/3/131380546/9e48b71e4df.pdf
    • http://files.thienphuoccharity.com/uploads/1/3/1/8/131857115/gatozogemufumif.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/wicked_game_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0435/1623/1840/files/21138242164.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0067/files/91498362747.pdf
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/bugepuneze.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/meretivufoditi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/tetagani.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/jadowavowikajenozep.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/nibejukomibov.pdf
    • https://cdn.shopify.com/s/files/1/0433/3587/6776/files/xepufopatumawanixegipisav.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/lowes_palmyra_pa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7253/files/94457983990.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/bolozefatekojadesulap.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/fodororinu.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_off00005262.bin
ce5324312b014b9b5985023cb3ad5d26e74b754ce660a830086e2293afb7e1cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5262 5320 bytes
font_01_sfnt_off0000646a.bin
b5accd909a28b31eea2e39548f988541a917e84981abbea9a69a9e083e34e9a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 10200 bytes

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