Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d06b80c4064987…

MALICIOUS

PDF

37.8 KB Created: 2020-08-24 13:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90436cf03c5a1ddd2dac96c8b3681a95 SHA-1: 51b2e6205a13504ee209646dada83c377ab411f5 SHA-256: d7d06b80c40649878aa21af356954c56575e1139a9fd0f7dd1e21c667f43d99a
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a Vodafone postpaid SIM cancellation letter. The document also hosts a large number of links to other PDFs, likely for SEO poisoning or to obscure the malicious redirector. The primary intent appears to be directing the user to malicious infrastructure via the embedded link.

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.com/pify?keyword=vodafone+postpaid+sim+cancellation+letter+format
    • http://kavokum.asisuppliermarketing.com/uploads/1/3/1/6/131637218/1104020.pdf
    • http://bawiwa.alliancebulldogs.org/uploads/1/3/1/1/131164100/nulexinu-renepogexe-wurivarivirepon.pdf
    • http://files.disciplesnocona.org/uploads/1/3/0/7/130776386/pixodud-xakinomobiv.pdf
    • http://files.shawtyreservices.com/uploads/1/3/1/4/131452938/9000144.pdf
    • http://files.sethallenyoungphd.com/uploads/1/3/1/3/131380985/tuxib.pdf
    • https://cdn.shopify.com/s/files/1/0440/5982/0182/files/lululepa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/18918788156.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/41708815348.pdf
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/brother_sewing_machine_model_cs6000i_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/difemonagisafitegegaloma.pdf
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/wolupenekimujujerezux.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9969/files/desitudotaxejigitijuvudob.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/55564309750.pdf
    • https://cdn.shopify.com/s/files/1/0428/4225/9612/files/14226814895.pdf
    • https://cdn.shopify.com/s/files/1/0437/6274/5501/files/contiki_travel_guide.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/46280718566.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/33628840394.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054e7.bin
065a9ecb32e96deb1876d485338e959a8711394bba3677d50dad36567ddc7d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E7 5264 bytes
font_01_sfnt_off000066b7.bin
fd1e03f03fad469459c96ec7133b10b8a53add4233945d6eadea55957ea24821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B7 10288 bytes

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