Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db063a33579d669…

MALICIOUS

PDF

44.6 KB Created: 2020-07-24 17:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fcde074886bbb94ae07d3566bbbf630 SHA-1: 9de05dcce64d9f543b714b46618ab16841aa77a1 SHA-256: 2db063a33579d669a97225282f933916174ad89102132cf91a1e9de816eadb40
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical heuristic identifying a malicious redirector link. The document body, though heavily obfuscated, appears to contain metadata related to the file's creation and potentially search terms. The presence of numerous embedded links, including one pointing to a known malicious redirector, strongly suggests an attempt to lead the user to a harmful site, likely for phishing or malware distribution.

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=biochemistry+third+edition+h.+stephen+stoker+pdf
    • http://files.jeanwhitfieldjewellery.com/uploads/1/3/0/8/130814115/tabez_sotekuru_pofadavukoxu_fuvikexabugiwaw.pdf
    • http://files.misfitcrusaders.com/uploads/1/3/0/8/130814672/634f8e.pdf
    • http://files.crazydaisymarketing.com/uploads/1/3/1/3/131380279/kaxuta.pdf
    • http://files.vetmobileclinic.com/uploads/1/3/1/3/131398532/tabumokuwev.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5976/files/bapazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/fomarokubejezapazorolunaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2053/files/73060815003.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/lewotexuvatupoboxidoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/73434086830.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taniseraguvifololesugom.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/tasetasut.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/9835633531.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/65692514973.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/detujasos.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/85852997189.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/befewifavuzi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4966/2117/files/xirikavirene.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_off00006870.bin
0e7900065c9e11253249adad1154eb09e80648ea8bbdb39afcea58d24a958423
pdf-font-stream PDF embedded font (sfnt) at offset 0x6870 5188 bytes
font_01_sfnt_off000079ee.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x79EE 1800 bytes
font_02_sfnt_off0000827b.bin
86117ef1d52400218b6276f119a02e7b57499fecc126d91d574418d50686e0da
pdf-font-stream PDF embedded font (sfnt) at offset 0x827B 9964 bytes