Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae676d765ce0fb1…

MALICIOUS

PDF

43.6 KB Created: 2020-08-25 07:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 832517b2599ea833a33123216c4c7b72 SHA-1: 78d53240de41a36eb163ca6e2c98fd374a199a94 SHA-256: 2ae676d765ce0fb11cd580b519a5198589f213b5e64eec7b5c50b1aab16f1a8f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO link farming or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure. The document body itself is largely unreadable binary data, but it does contain the URL that triggered the malicious redirector heuristic. No scripts were extracted from this sample.

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=latex+beamer+insert+pdf
    • http://zagilaso.wildeaboutexploring.com/uploads/1/3/0/7/130776131/8130000.pdf
    • http://metibo.stcloudpantry.org/uploads/1/3/1/3/131398101/7645825.pdf
    • http://files.publiclandingrestaurant.com/uploads/1/3/1/3/131398406/8401899.pdf
    • http://xilaxezag.lforlupus.com/uploads/1/3/0/7/130775451/2663980.pdf
    • http://wewomi.crosstownmaple.com/uploads/1/3/1/4/131482975/6437088.pdf
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/biogeochemical_cycles_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6394/files/ics_200_quiz_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/lebibig.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/fivudivedumisozedikatuva.pdf
    • https://cdn.shopify.com/s/files/1/0441/4429/6088/files/mcdonald_s_think_global_act_local.pdf
    • https://cdn.shopify.com/s/files/1/0430/7527/2855/files/file_bitmap_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/55172128725.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2622/files/new_email_template_outlook_2010.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/93485546433.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/case_files_orthopedic_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6503/files/guxeditofok.pdf
    • https://cdn.shopify.com/s/files/1/0432/9478/5694/files/lawuleduresaxosireb.pdf
    • https://cdn.shopify.com/s/files/1/0431/4103/8234/files/buzatixelebinomunudefa.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_off000062cc.bin
1fd40c77b4a421d1cdcdc62fcb1d91f7cc9e320f8af6aa38aca8651580f988bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x62CC 5304 bytes
font_01_sfnt_off000074c0.bin
cf0c4dc5f6d78b6ee9eeb172f94edb26a91c552f04cf82a7059d32abaca9f92a
pdf-font-stream PDF embedded font (sfnt) at offset 0x74C0 14064 bytes