Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ad56386d980ef5…

MALICIOUS

PDF

52.8 KB Created: 2020-08-15 00:13:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7488df1f62dc27684c9a8423b3a68ead SHA-1: e66d79ba3337cd32e1b1344f70a18c15e94f0398 SHA-256: 35ad56386d980ef563ff65454b9f9e9bcc5cd937712977c1fc0fdf6e2ab9ee88
120 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 Shopify domains hosting other PDFs, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests a link farm or SEO poisoning tactic designed to lure users to a malicious site. The document body, though heavily corrupted, contains the malicious URL, reinforcing the attack pattern.

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.cc/pify?keyword=benedetti+poemas+de+amor+pdf
    • http://fijum.themotherwitconference.com/uploads/1/3/0/7/130776783/vorarira.pdf
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/242224005.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/kodi_exodus_install.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/95436207014.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/tiwidisozix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/lapofozokuzubaxikike.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/27705930804.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3640/files/academicismo_arquitectura.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/88123930931.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/caprice_24_clarinet.pdf
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/play_sounds_through_discord.pdf
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/zajomiguxolofigopexa.pdf
    • https://cdn.shopify.com/s/files/1/0436/0280/4898/files/principles_of_astrophysical_fluid_dynamics.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/54670439240.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_off00008fe5.bin
1b31ba4f018e9a052cab42865a0c2310e128edf1e4e744bc518d35e165bb50a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE5 5204 bytes
font_01_sfnt_off0000a17b.bin
261873cb256975111e0135c08c84dec6193a853526d36dbe2d0f840a0b1423ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA17B 10996 bytes

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