Malicious PDF — malware analysis report

Static analysis result for SHA-256 90584d39a6426b64…

MALICIOUS

PDF

51.4 KB Created: 2020-09-17 09:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d47b1fab3833f8a776486e18ecb2713 SHA-1: ba450b7de86b8c688bd20b4d03b4a9ac09eb834e SHA-256: 90584d39a6426b648969b388d012b00d242c6ab4c41d1f77b00d7a7ce218689a
140 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 external PDF files hosted on various domains, suggesting a link farm or redirection scheme. One critical heuristic identified a link to a known malicious redirector, and another heuristic flagged the document as a callback phishing lure, indicating a potential scam or phishing attempt. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector.

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.link/wix?keyword=ninebot+one+e%252B+specs
    • http://files.tremptrip.com/uploads/1/3/1/8/131871704/juxatilet-gawap.pdf
    • http://wazaxa.visionlighting-inc.com/uploads/1/3/1/1/131164250/wisokogufipaxod_mupukod_niposuwer.pdf
    • http://rekov.icpba.org/uploads/1/3/0/7/130776023/6963938.pdf
    • http://files.thechurchofthelivinggod.com/uploads/1/3/1/3/131379223/1937077.pdf
    • http://files.beaconbeerco.com/uploads/1/3/1/6/131606393/a9ebc51937.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/calculus_of_variations_with_applications_ewing.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/lepevisokubesegibe.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/ford_industrial_engines.pdf
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/jixomosuvugusazesuzoziti.pdf
    • https://cdn.shopify.com/s/files/1/0481/6181/6727/files/pigodatewekivedije.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/babuli.pdf
    • https://cdn.shopify.com/s/files/1/0438/0613/0337/files/penasedezom.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/the_bourne_supremacy_soundtrack.pdf
    • https://ee0fb703-1fe2-4174-bed7-e20b3b2fa5d3.filesusr.com/ugd/9bd82e_a4f1f036da8b4fe490a1f6e118c3c38e.pdf?index=true
    • https://7a2fd1a9-a9b6-4093-8382-7433d048a89c.filesusr.com/ugd/957c7b_418e629eb5ac44d3bdcb61dcad22a897.pdf?index=true
    • https://46b2cda0-f2e2-4efe-a5e5-4cdb7bb39096.filesusr.com/ugd/4a2613_915934d107224c33b87b4f29431b7786.pdf?index=true
    • https://6b805bbb-7f4f-42a2-a915-397dafa86267.filesusr.com/ugd/4826f5_c67a69b2ccb144adbd6829b9e8fd9eb2.pdf?index=true
    • https://28f71062-cb96-4dce-ac74-49b2c061d7c2.filesusr.com/ugd/d1fcfc_572a751fbf834a6c9e7b20d7177cfdce.pdf?index=true
    • 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_off0000835f.bin
903a7ac20ee9c5e583455ab6f3dcf5027a67c1d6d2367bc385d92d094f532d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835F 4700 bytes
font_01_sfnt_off00009377.bin
65db82e183047189b45b5c9202162a5a9c4785698cb6e5ba032157f38ba51cdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9377 14460 bytes

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