Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d704f9c13816bc…

MALICIOUS

PDF

47.3 KB Created: 2020-08-28 00:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d51e12c4e9e652d1494ac643a8871ac SHA-1: 8f963e286a1e3d7be3d048f19bf97801ff2043a8 SHA-256: d8d704f9c13816bcc2c36e589ac6c9ae343fc3469880c9ed7bb3e1f7bbd83fbb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior, suggesting a large number of outbound links, many of which are to benign Shopify URLs but one critical link points to a suspicious redirector. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=pathologic+basis+of+disease+7th+edit', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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=pathologic+basis+of+disease+7th+edit
    • http://dovosof.keepingupwiththehoustons.com/uploads/1/3/2/8/132814930/dozodafulivovelekani.pdf
    • http://files.arlingtonroofingco.com/uploads/1/3/2/6/132682647/fotafikikalafo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1033/2571/files/machine_hour_rate_calculation_in_excel_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/81537273246.pdf
    • https://cdn.shopify.com/s/files/1/0437/4449/3720/files/addition_word_problems_for_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/injection_blow_molding_process.pdf
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/c_binary_tree_implementation.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/apostrophe_worksheets_for_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0448/0316/2263/files/the_accidental_prime_minister_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/2394/8183/files/medeximepumoxavaxagomi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/80084430570.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/pibudisobobef.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/84791117212.pdf
    • https://cdn.shopify.com/s/files/1/0450/6845/1992/files/ceh_certified_ethical_hacker_study_guide_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/24325316389.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_off00006d98.bin
b449b38d72b26b92bd471d1dc68f3d983ca653817e2f0ffb501141809c3ed0b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D98 5088 bytes
font_01_sfnt_off00007ef3.bin
3fd8c971bd87ba3262635496406b729980ea95e371bc3594ce28f9173f5d697d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF3 10148 bytes
font_02_sfnt_off0000a1c0.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C0 4324 bytes