Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c4820a46dda0d0e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-15 22:24:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e48de6efe5aeaa9208719840389c3d1e SHA-1: 54432f4eb15209380d8b89033164ba4a3e4f63ce SHA-256: 7c4820a46dda0d0e948510f58d89e3728bea35d5e4b188f6134d0a4ffb79a223
142 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector. This suggests the primary goal is to redirect the user to a malicious site, potentially for phishing or malware delivery.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=what%20is%20community%20engagement%20solidarity%20and%20citizenship%20pdf
    • http://files.utahmicroloanfund.org/uploads/1/3/0/7/130775310/gurexadudedi.pdf
    • http://files.kilmerschool.org/uploads/1/3/2/6/132681536/4142342.pdf
    • http://milozup.dartendistrict.com/uploads/1/3/0/7/130775735/a533a344115d.pdf
    • http://dijefisos.taitcolberg.com/uploads/1/3/0/7/130775125/9b7bad.pdf
    • http://files.sdra.org/uploads/1/3/2/6/132696351/9360962.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7670/files/15203975704.pdf
    • https://cdn.shopify.com/s/files/1/0435/8645/3663/files/mixed_addition_and_subtraction_word_problems_3rd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/nudimomosaxowa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/wondershareelement_6_professional_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/83240747254.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/2905850843.pdf
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/jaxatabeju.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/water_pollution_control_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0437/8758/3650/files/72006911591.pdf
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/sujerewepekemimubitexazep.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_off00005ea8.bin
d29bd6b679dd015fcf741a7dd29ab0a3ad2c63a463f6b2f9fe2f5c6b0d984ca8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA8 5616 bytes
font_01_sfnt_off000071b1.bin
d9c9e25055863bdca02aa9ef24f0b46a44d672aa339e8d9b371e293d7ed971b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B1 10632 bytes
font_02_sfnt_off000095c7.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x95C7 4324 bytes