Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4591c57e19275e…

MALICIOUS

PDF

46.6 KB Created: 2020-08-18 22:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4734e1d3d157a630a658448595990a52 SHA-1: 00e5d5a8e3a84d480e628db1839ac131a761095d SHA-256: fe4591c57e19275ed7d05ede2edcf1e9b00944df4e79fe93b0eb77b368506a5c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=what+organisms+perform+photosynthesis+and+cellular+respiration, is likely used to redirect the user to further malicious content. The document body itself contains a question and references the PDF creation tool, suggesting a social engineering lure to encourage link clicks.

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=what+organisms+perform+photosynthesis+and+cellular+respiration
    • http://files.bellevueptsacouncil.com/uploads/1/3/0/7/130775677/rixarifizivemuva.pdf
    • http://fikodu.burgesmustangfootball.com/uploads/1/3/1/6/131606490/lapofufana.pdf
    • http://boboxumu.wakefieldstudentsupport.com/uploads/1/3/0/7/130775432/5002136.pdf
    • http://vogif.clairehinchman.com/uploads/1/3/1/3/131380600/125feaa9434.pdf
    • http://files.thefuninforever.com/uploads/1/3/2/7/132740327/2ef30d.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/quimica_inorganica_catherine_housecroft_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89853177043.pdf
    • https://cdn.shopify.com/s/files/1/0432/1280/0168/files/kimujowit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5408/files/53037948399.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/gemifarosu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/brownlie_principles_of_public_international_law_james_crawford.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokukivovasogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/66016557049.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/13549696753.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/commercial_building_design.pdf
    • https://cdn.shopify.com/s/files/1/0440/1148/7397/files/john_deere_rx75_manual.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_off00007722.bin
44defd57d536697624023dadcffe677a781ada653a3bba4495c68969c0f01830		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7722 5684 bytes
font_01_sfnt_off00008a65.bin
58595c50f326b2b301139ce88f70a093ef349876f95bce0a6138ff8ddddfbbe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A65 10148 bytes

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