Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cf8f06d73103b6…

MALICIOUS

PDF

47.7 KB Created: 2020-08-01 15:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f8192d5693945ce5cf9138a0533c385 SHA-1: b10fe377cee59aa7a43806589da16664de55f346 SHA-256: c8cf8f06d73103b6b36b72eeb1360a29d51f540dd5128d3467de04cdaf6f61d2
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=laboratory+manual+in+physical+geology+10th+edition, which is likely used to redirect the user to a malicious site. The PDF also contains a large number of external links, many pointing to shopify.com domains, suggesting a link farm or SEO poisoning tactic to increase visibility and lure victims.

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.cc/pify?keyword=laboratory+manual+in+physical+geology+10th+edition
    • http://files.amcommunications.org/uploads/1/3/0/9/130969790/lipetov.pdf
    • http://files.gfx-pro.net/uploads/1/3/2/7/132710795/wunologorosapapaze.pdf
    • http://files.hobanwellness.org/uploads/1/3/1/4/131406275/sirero.pdf
    • http://files.stonehengebelleville.com/uploads/1/3/2/6/132681887/1ad54f9f90c4.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/77928086414.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/58315925055.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8917749958.pdf
    • https://cdn.shopify.com/s/files/1/0437/6998/7223/files/48147647645.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/lurazedapiji.pdf
    • https://cdn.shopify.com/s/files/1/0432/9304/8992/files/tebovewupukapefujozojobo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/92839453968.pdf
    • https://cdn.shopify.com/s/files/1/0432/6899/7288/files/doxomujodewa.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/77702389918.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/27667675891.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/84070861513.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/babodevexugegaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8116/1111/files/firaworosijoma.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_off00006cca.bin
8fab1ed27cc954de601cb039603715dba6b2c49cc506b70b871cc506d4f41296
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCA 5744 bytes
font_01_sfnt_off00008025.bin
e69f2830146db46903e87a04626b3956169a17bc0ec33fd155d301fb4ceaafa0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8025 10464 bytes
font_02_sfnt_off0000a36d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA36D 4324 bytes