Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6242e0f8a93a3c8…

MALICIOUS

PDF

62.3 KB Created: 2020-08-14 04:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68843abfa32db2976e1839f7b3499a1a SHA-1: e71834b397f9bc7fb86fccb869935759a8f4765b SHA-256: a6242e0f8a93a3c81185f636620f664d6c7892345d50d4376def55ef62bdcfae
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a lure for downloading Android APKs. Additionally, the document exhibits characteristics of a callback phishing or tech-support scam by implying a need to contact a number for billing or security reasons. The presence of numerous embedded links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination and potentially evade detection.

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.com/pify?keyword=telecharger+android+apk
    • http://files.inyourpacefitness.com/uploads/1/3/1/4/131483019/juzud.pdf
    • http://nakewaf.rahbuilding.co.uk/uploads/1/3/0/7/130740178/wavadigo.pdf
    • http://garup.marion-dewar.com/uploads/1/3/0/8/130874359/rajalofazonob.pdf
    • http://files.yestocake.com/uploads/1/3/0/8/130814052/10e86bba.pdf
    • https://cdn.shopify.com/s/files/1/0428/9147/7159/files/kibitejerubewoduse.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6127/files/nitokaporaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2485/files/takefavanakogodibu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8351/4527/files/mitirojasotodafifusinu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/samagesawawamepew.pdf
    • https://cdn.shopify.com/s/files/1/0437/0864/5541/files/zoviriwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/titalubur.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/43891972122.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/tagutifore.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/54797622495.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/61326033274.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b6d.bin
8bdbd262a3b9729bfcb7241fdc4f832e4869f4dcf84e00a0e9f7c146f91922d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6D 3164 bytes
font_01_sfnt_off000076be.bin
c0c13580eb1d3bc7c1832ae2428d6d524041eab98c9c700afab0550b25c589e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BE 5168 bytes
font_02_sfnt_off0000883c.bin
49ed32338e48d35a2b788bc899ea652da9951fb075809d33baa196259cf172f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883C 5056 bytes
font_03_sfnt_off00009b13.bin
2a411feb3b30567e849db62fc1ab10528a1d0fc34bbd816bf0b046e265ec01c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B13 16124 bytes
font_04_sfnt_off0000cca9.bin
5542b618d7bf1c3a5cb128561cfc7554dad264a6b695d09dbf1ceae955c77513		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA9 19944 bytes

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