Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6fa786ade3a98e…

MALICIOUS

PDF

54.4 KB Created: 2020-08-21 15:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fd82092eb4bffd1d5bdc2531f1c4b58 SHA-1: b2c3a2e4f1f5d00c0a290350ef5a47818ea3b013 SHA-256: 2b6fa786ade3a98ef379f837958abd0ece71b08f591a56e94c54436ae1768a75
160 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document also exhibits characteristics of a 'password-protected archive lure', suggesting it's intended to trick users into downloading and opening a password-protected file. The presence of numerous external PDF links, as flagged by 'PDF_SEO_LINK_FARM', further supports a delivery mechanism aimed at obscuring the malicious intent. The primary malicious URL identified is https://ttraff.cc/pify?keyword=b+ed+application+form+2019.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=b+ed+application+form+2019
    • http://nagelex.nottinghamnorthstars.net/uploads/1/3/0/7/130739206/muxaluko_kijutuwanuzu.pdf
    • http://files.iananthonycoleman.com/uploads/1/3/0/7/130776718/9342694.pdf
    • http://files.drferreras.com/uploads/1/3/0/8/130813757/aff61b1.pdf
    • http://vazidomax.sasolmc.org/uploads/1/3/2/6/132682156/guvonomezexaze.pdf
    • http://files.blackwatervideo.com/uploads/1/3/1/1/131164558/guwixuk_wupukiro_vopadiguwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/6987170841.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/bsn_sports_logo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/47385822306.pdf
    • https://cdn.shopify.com/s/files/1/0463/1825/6288/files/kitoxira.pdf
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/zaxavufemevudofuzut.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/bamunixiwam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15796621189.pdf
    • https://cdn.shopify.com/s/files/1/0437/5982/9149/files/4122937206.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/closed_form_summation.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/tiduxalogokiladoj.pdf
    • https://cdn.shopify.com/s/files/1/0463/4470/0066/files/capitalizing_titles_chicago_manual_style.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/adobe_convert_to_word_online_login.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/rinaxurobitidijub.pdf
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/wisamixelugawopoboko.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_off00009674.bin
842313d3edef8a6e6036d7fb3fe98f1bea3091eb451c6b2101421db001a3dcf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9674 5656 bytes
font_01_sfnt_off0000a995.bin
304df2f01c7c6c66460f8af8c2b8bb71871a74569649d0358c3dd928470becb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA995 10312 bytes

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