Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18699ad748747b8…

MALICIOUS

PDF

37.9 KB Created: 2020-09-01 01:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f2ec96f9bd63ee1f14a78b45636da82 SHA-1: 6478ddf935e2e4efd3ce4201f43d02326425870e SHA-256: c18699ad748747b817503323913cbc7087ffbfc5c66d652a6a885370fe6da891
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL designed to appear as a Bosch appliance installation manual. This URL is the primary indicator of malicious intent. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to benign Shopify domains, likely for SEO manipulation to increase visibility of the malicious link. No scripts were extracted from this sample.

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/wix?keyword=bosch+pie631fb1e+installation+manual
    • https://cdn.shopify.com/s/files/1/0437/5740/4309/files/tegavifolezemiriworaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/cisco_finesse_administration_guide_release_10._5.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/woxefusunazumumifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/an_astrologer_s_day_story_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/bozufuviboviwolumej.pdf
    • https://cdn.shopify.com/s/files/1/0443/8743/4662/files/aghanashini_river_information.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/tufulevetoxeriben.pdf
    • https://cdn.shopify.com/s/files/1/0437/7912/9501/files/zidasifozudemato.pdf
    • https://cdn.shopify.com/s/files/1/0430/1435/7145/files/suzika.pdf
    • https://cdn.shopify.com/s/files/1/0430/6701/5335/files/bunting_template_design_ideas.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_49bf87b3b0564cc3af984edbd02f4993.pdf
    • https://static.usrfiles.com/ugd/67e251_ead0e87ec64b4fd18c7560896b2db5ec.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047e3.bin
2e8bf3717eea3c37a714d17116900fc78d1af607498e838ec18e4206e607eb0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47E3 5600 bytes
font_01_sfnt_off00005ac2.bin
e204e350815204d4602467f218c4080c30665e60d6e9a69f6eda26a718c517ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC2 9984 bytes
font_02_sfnt_off00007cec.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 4324 bytes

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