Malicious PDF — malware analysis report

Static analysis result for SHA-256 249c36ca65f94aa9…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 12:27:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86507277a8f410e08fe780372d7b2b8 SHA-1: afceb43345f53b47783ae53b431875ffa2d249d9 SHA-256: 249c36ca65f94aa9de591555c5d0858ebd5a97195f8d5903a7fcd33502fa4b8f
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 critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though malformed, contains text related to 'inflation and unemployment' and the malicious URL, suggesting a lure. The presence of a callback phishing lure heuristic further supports a social engineering attack vector. The primary attack pattern involves redirecting the user to malicious infrastructure via embedded links.

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=relationship%20between%20inflation%20and%20unemployment%20in%20south%20africa%20pdf
    • http://files.aimeehillmassageyoga.co.uk/uploads/1/3/2/6/132683154/7e0959846e.pdf
    • http://files.waynetownshiptrustee.com/uploads/1/3/1/1/131164440/ad46123c10e525c.pdf
    • http://sodet.mandrcatering.com/uploads/1/3/1/4/131453850/vower-jurineragagug.pdf
    • http://mabagi.doublekequineservicesllc.com/uploads/1/3/0/9/130968921/gosozisikapa.pdf
    • http://files.gccserviceshouston.com/uploads/1/3/1/3/131398338/2c4455c80.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/pafirivuwajewoximiruwuw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/puvomerodaxabivoxapa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8833338052.pdf
    • https://cdn.shopify.com/s/files/1/0433/6100/9829/files/movafaj.pdf
    • https://cdn.shopify.com/s/files/1/0447/3012/2393/files/life_together_dietrich_bonhoeffer.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/2_3_5_7_11.pdf
    • https://cdn.shopify.com/s/files/1/0433/5792/9621/files/39118225886.pdf
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/architectural_perspective_drawing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/john_deere_z225_problems.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/nazomafovulatodorimaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2694/7989/files/59538686782.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/40554125586.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/vijabafagedisepagis.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/segofinavafijulibefifanib.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/
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/segofinavafi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fa4.bin
c2dc82365afd124f6f50811c7d2166e14b656d22a453a48e6bd670e2202fd059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA4 5736 bytes
font_01_sfnt_off00007316.bin
bd07e483079046ad5205544ebed1e1daf728d9f3bcefc152ded5c7a55ab2213e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7316 10312 bytes

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