Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b638fe86d02527f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 07:09:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f2fe3911455a0cd671e2c7a32f79ea SHA-1: 684a92e9a7e9f4f6b3aa9f2af51cf22d771fb695 SHA-256: 3b638fe86d02527f2fbacd969c5ac8806fa852252812fca17bb2b4a50cbc1ef8
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.ru, disguised with a lure related to the 'Wings of Fire' book series. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to Shopify domains. The primary malicious link is https://ttraff.ru/pify?keyword=wings+of+fire+book+9+pdf+free, which is likely used to redirect the user to a further malicious destination.

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.ru/pify?keyword=wings+of+fire+book+9+pdf+free
    • http://files.alexandriatalley.com/uploads/1/3/1/3/131381675/tulelisud.pdf
    • http://taxubogu.construction-industry-software.co.uk/uploads/1/3/0/9/130969746/822932ed3b96f.pdf
    • http://files.interfaithutica.org/uploads/1/3/0/9/130969218/9093583.pdf
    • http://files.jrlockandsecure.co.uk/uploads/1/3/0/7/130776503/90f75fc8a74d.pdf
    • http://files.msrhondajwilliams.com/uploads/1/3/2/7/132741535/gasixodub.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/25100006791.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4680/files/baba_yetu_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/fulare.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/10100805191.pdf
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/32149277277.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8618/files/vologopanazux.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8770/files/pazowe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/41855261565.pdf
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/anesthesia_technician_resume.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/terraform_aws_client_vpn_example.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_off00005f4b.bin
adc3c3f774a2dbfd5517d21d7014aae50b76770b4e666406a27b2aa1ea768a70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4B 5340 bytes
font_01_sfnt_off0000718c.bin
6b9428c197602a5ae97098ec6573782ef65b072423850b03d341fcddb1c7f96e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x718C 12968 bytes

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