Malicious PDF — malware analysis report

Static analysis result for SHA-256 39644ccfc49f8711…

MALICIOUS

PDF

40.2 KB Created: 2020-08-09 02:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a7e8367561e9734a18ff3ced0fad218 SHA-1: bcbf740670e789e04fa497374ac0f6f87e51c2dc SHA-256: 39644ccfc49f871172cba954f3f63cc66641263c1cac4b7a1061e449de696ae9
140 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for phishing or to download further payloads.

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.ru/pify?keyword=already+yet+present+perfect+pdf
    • http://files.uprisingstarsinc.org/uploads/1/3/1/3/131379045/gowofikur.pdf
    • http://files.fhstrackandcross.org/uploads/1/3/0/7/130740222/6221014d7e16.pdf
    • http://files.phruksathaispa.co/uploads/1/3/1/1/131163617/1009692.pdf
    • http://files.elkcountystriders.com/uploads/1/3/0/8/130874110/vobure-tifepub.pdf
    • http://files.campbellresearchandconsulting.com/uploads/1/3/0/7/130739826/sukodafef.pdf
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/fonezixevazo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8097/4490/files/vofis.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/zoriforanuke.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5559/files/69567851398.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7786/files/mcdonald_s_menu_with_prices_sa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/zezidikosakedodagavagipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/95195540048.pdf
    • https://cdn.shopify.com/s/files/1/0428/9953/8087/files/tujur.pdf
    • https://cdn.shopify.com/s/files/1/0430/8316/9943/files/42786632981.pdf
    • https://cdn.shopify.com/s/files/1/0433/6776/0028/files/converter_para_word_candy.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/jowopebavaloxaleb.pdf
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/basic_accounting_concepts_in_marathi.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_off00006029.bin
26e98d47351e882b71d13fb3544cf8a95b30ea764a98c94fc3ba8b0ada9fac71
pdf-font-stream PDF embedded font (sfnt) at offset 0x6029 5240 bytes
font_01_sfnt_off00007216.bin
fcc8b7f2f0caa1010a956c2ed8d7ce318f0426fcec5e7ec0d8fe0457d256149b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7216 9928 bytes