Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0efbd61f433e44…

MALICIOUS

PDF

41.5 KB Created: 2020-08-20 12:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 498b411aeda1626898cf33c874181847 SHA-1: 570a6413a8491c3e535200c562f82581caed6243 SHA-256: 7c0efbd61f433e44fe457ccd045bc0374254605712bbfc557e92600ef841c6ec
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with the primary link pointing to a known malicious redirector. This suggests a phishing or social engineering attack aimed at directing users to malicious content. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating an attempt to obscure the final malicious destination. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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=statistical+quality+control+mcq+pdf
    • http://files.bookmobiledoorcounty.org/uploads/1/3/0/8/130813509/e260c922014bdd6.pdf
    • http://files.sarahbrothersbot.com/uploads/1/3/1/3/131384555/dukinenugadinov-xukubola-mogigib-mujobutavopoput.pdf
    • http://kuzimekoz.casacose.com/uploads/1/3/1/4/131407469/vubuvudixozisan.pdf
    • http://xapigura.skmagicpromotion.com/uploads/1/3/0/7/130776687/3d361dacaf9548.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdf
    • https://cdn.shopify.com/s/files/1/0431/3668/0098/files/tagope.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/3835807328.pdf
    • https://cdn.shopify.com/s/files/1/0435/6230/3637/files/affidavit_letter_for_immigration_marriage_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/64413435016.pdf
    • https://cdn.shopify.com/s/files/1/0440/2331/6630/files/lldb_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/51307461154.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7096/files/marathi_aarti_sangrah_file_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/korewezezarumibif.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/autumn_leaves_jazz_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taniseraguvifololesugom.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/chopin_etude_8_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/848997804.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_off000060c5.bin
2272aee5de258cfa7b31048b42a8053d1dc6723b061e602d68dbf8e0f68b89e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C5 5632 bytes
font_01_sfnt_off000073d1.bin
f00eee76fcb7408e3daebf294644835df78ec2d24ad0fb3bbd894b8325330fd4
pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 10908 bytes