Malicious PDF — malware analysis report

Static analysis result for SHA-256 92477d88b28a9816…

MALICIOUS

PDF

35.7 KB Created: 2020-09-04 19:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e092439d2002b3409a9b18a769052c8 SHA-1: 736bb72e6675d124eddb9cd8f21bd1c35b5ceacb SHA-256: 92477d88b28a98164b1581ba80b289850bdfe32ef02420323f511ef54a7e1252
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.link/wix?keyword=california+dreamin+flute+sheet+music', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lure users to a malicious site, likely for phishing or malware delivery.

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.link/wix?keyword=california+dreamin+flute+sheet+music
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/84597895179.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/25182732085.pdf
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/zapapukavazewuzuti.pdf
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/answering_service_jobs_from_home_houston_tx.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/negor.pdf
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/demande_d_aide_au_logement_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/0548/3942/files/98394877129.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/auto_repair_shop_invoice_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/4925/5066/files/ac_dc_highway_to_hell_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/71510388024.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/negekatomuwavupesige.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/tulunekapuwurolunimugef.pdf
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/wibemuwevipulenejokivival.pdf
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/bajirao_mastani_songs_pk.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/76839582315.pdf
    • https://cdn.shopify.com/s/files/1/0461/4180/0601/files/ferewadirif.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_off00004b52.bin
a578276adc7c01ac201bbd52c597ca8ed3a2ebc761d2c0703a4b25172b2bb117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B52 5168 bytes
font_01_sfnt_off00005cb3.bin
606ffe88f1ede0bcebe5bbe5bc16d3202abb24046b83c23b6e6204b36bdc443c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 10872 bytes

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