Malicious PDF — malware analysis report

Static analysis result for SHA-256 268f9bbca9834a29…

MALICIOUS

PDF

43.2 KB Created: 2020-08-27 14:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 689987423b9feda2d7c3ccf4cabfc644 SHA-1: 42bfced130bdb2d6de32633d5fa788506ef53f2a SHA-256: 268f9bbca9834a2962f9770bd1f7b5903cbb1fa2b2ca2a21d32403d7becfb8cb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded external links, forming a link farm. One of these links redirects to a known malicious infrastructure at 'ttraff.com'. The presence of a malicious redirector and the sheer volume of links suggest an attempt to distribute malicious content or engage in SEO poisoning to attract unsuspecting users. No scripts were extracted from this sample, limiting further analysis of its behavior.

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=mega+barrel+bomb
    • http://files.schoonerdaze.com/uploads/1/3/0/7/130740490/tajiluw.pdf
    • http://files.thisistherock.com/uploads/1/3/0/9/130969761/19522d7.pdf
    • http://negupaf.oquincegoldenretrievers.com/uploads/1/3/0/7/130776779/1507802.pdf
    • http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/zojawejazupimemuroroda.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2232/files/41656181973.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/kuruzilomivaxadiwosis.pdf
    • https://cdn.shopify.com/s/files/1/0438/7281/3211/files/rudugifoxebevusevuguvutuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6225/files/getuweredepig.pdf
    • https://cdn.shopify.com/s/files/1/0431/6633/5138/files/dream_catcher_original_song_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/maria_west_side_story_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/pelapivazikemusiximit.pdf
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/infinity_war_quiz_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/brat_diet_patient_education.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000058b1.bin
45f678bb3a3dff7b1f8d15bfbf9fbff7e7b904aaa3196f8680969a8a3a96dfe0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x58B1 13076 bytes
font_00_sfnt_off000047e0.bin
efb909ef6780ba300d06c201db98daa631f3e69d21a0d608ed46f6cb2b18ce94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47E0 4972 bytes
font_02_sfnt_off00007d7e.bin
ba75a4f1ceb0927c5914fd88350e3c894683d299348227a6d872a0de11d6a84e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7E 9640 bytes

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