Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1e24a1cdbb053b…

MALICIOUS

PDF

61.5 KB Created: 2020-09-10 03:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a55bd126c90df672b214e243059bfd60 SHA-1: c3c1047b2a923be3cbe7d836b08e2707159ea44c SHA-256: be1e24a1cdbb053b85aca09d0190b71747a163d1ab4c9274cfa2da17b82e9535
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links redirects to a known malicious infrastructure at ttraff.club. This suggests the document is designed to drive traffic to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=nitrogen+oxides+formation+combustion
    • http://files.high5communicationresources.com/uploads/1/3/1/4/131406537/6fbcc6d24052.pdf
    • http://files.sheep.education/uploads/1/3/0/7/130775654/fesil_morokumujudaj_vokiwufokubufov.pdf
    • http://fepufuki.wholeheartedpt.co.uk/uploads/1/3/1/4/131407408/75a6453916efe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4374/9029/files/z390_aorus_pro_wifi_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/dukulakav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/1900984482.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/honda_accord_2013_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/girudibuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/besm_d20_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5879/files/nafopibupuguridesomumaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/questions_and_answers_in_english_language.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_off00009b10.bin
55955a31cf000f28dd4b78fc57f32be88e610dd89a90f85ecb8245e7776501dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B10 5488 bytes
font_01_sfnt_off0000adb2.bin
d8befcd5bdfe3bb4d94c1c6fed04cd46e35736210225fd08945e598f2e49fbff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADB2 11044 bytes
font_02_sfnt_off0000d38f.bin
cd9af048b6191d1ac9842b8b620db4856963a34f9a4df3f0e5d30922d6139eca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD38F 16180 bytes

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