Malicious PDF — malware analysis report

Static analysis result for SHA-256 43056317c1507046…

MALICIOUS

PDF

40.6 KB Created: 2020-08-31 06:24:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e53f407c764e9765aeb20d628c13b53 SHA-1: 8b04359e93475572f49880abe784e11eca97bfc8 SHA-256: 43056317c150704609c92b1544c316cd86f4d0167212313d731e503a8340991d
120 Risk Score

Malware Insights

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

The PDF file contains a lure text "Bryant 80 furnace manual" and embeds a link to a known malicious redirector at "https://ttraff.com/wix?keyword=bryant+80+furnace+manual". The file also contains a large number of links to other PDFs hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The primary attack pattern involves tricking users into clicking the malicious redirector link under the guise of accessing a manual.

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/wix?keyword=bryant+80+furnace+manual
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/25179175892.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/28867297579.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9078/files/breakfast_on_pluto_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/waxonode.pdf
    • https://cdn.shopify.com/s/files/1/0454/5937/4230/files/free_resume_template_for_software_developer.pdf
    • https://cdn.shopify.com/s/files/1/0464/4903/3384/files/internet_cafe_simulator_apk_para_hilesi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6840/7464/files/central_oregon_rockhounding_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/1176/7448/files/other_words_for_guided.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/nes_roms_pack.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/68379147980.pdf
    • https://static.usrfiles.com/ugd/7dd30d_a8cf1e7313aa45969bc590a3e142151b.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_74bdfc6a162d4c08adc821c9c9a0dde9.pdf
    • https://static.usrfiles.com/ugd/b88e3d_23142d934b954432afceadeafa17f52d.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_off0000620c.bin
8452f682dfa89a8ce9bf673034420b8b70f1aececd5b31765375a1a9b9001609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x620C 5336 bytes
font_01_sfnt_off0000741f.bin
7197465b52b9571274ecbfe2f9345caafd3492bdef548c9fdca83a00d74d09ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741F 9932 bytes

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