Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b7f2a9ad096dc5…

MALICIOUS

PDF

40.5 KB Created: 2020-08-20 20:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a8a6ca70ebc35f0bf20e03ab07c74d1 SHA-1: cb0fc13db0059fbf684c5d1465d8b3aef2da8d1a SHA-256: 47b7f2a9ad096dc52ae8a3ad31c5f29b8b5eb5d492db0f851e55d5dd7a383215
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1200 Hardware Add-Override

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to an 'Identifying conflict in literature worksheet' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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=identifying+conflict+in+literature+worksheet
    • http://files.ramslegacy.net/uploads/1/3/0/7/130738955/kekozimopeveke.pdf
    • http://files.myfathershouseworcester.org/uploads/1/3/1/3/131379946/11d7caa3fa294d.pdf
    • http://vufud.kmid.com.au/uploads/1/3/1/6/131606156/2150784.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/39652807404.pdf
    • https://cdn.shopify.com/s/files/1/0438/1350/3133/files/40421093244.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/pojaninadevikuwevopitepo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2650/4086/files/wubodikow.pdf
    • https://cdn.shopify.com/s/files/1/0438/9237/5704/files/kukemituzo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/27098699212.pdf
    • https://cdn.shopify.com/s/files/1/0435/3336/9503/files/bilifalifuwebol.pdf
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/6600775198.pdf
    • https://cdn.shopify.com/s/files/1/0432/2639/8888/files/78440505504.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6332/files/85740365531.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_off00006040.bin
85f672413212fe65250a3128b0d42596ba10f696314c492ba91ba69089b312f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6040 5480 bytes
font_01_sfnt_off000072ed.bin
674fcaaa3110f29f13b3cacf96092c96cea083e2c36f7c6b3bf3648ae325db15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72ED 10004 bytes

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