Malicious PDF — malware analysis report

Static analysis result for SHA-256 939303416ef8aee6…

MALICIOUS

PDF

49.6 KB Created: 2020-08-26 23:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51c85fad2027b817d3c0280ee424de8f SHA-1: 885f8f40ac1bd50fb473cf894e10c5ade4231c5d SHA-256: 939303416ef8aee6b6d7eee6f36d253128ae40d78375c2625e4d654c59616eed
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=la+place+de+l%2527adjectif+exercices+pdf', is designed to redirect users to malicious content. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. The presence of multiple unknown URLs further supports the malicious nature of the document.

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=la+place+de+l%2527adjectif+exercices+pdf
    • http://tebiton.fbcbelfast.com/uploads/1/3/1/6/131606457/zajenuzif_duvawalixe.pdf
    • http://xakuge.whitestonegoldens.com/uploads/1/3/2/6/132681268/50bb1c2e.pdf
    • http://fonogodek.coronetclub.org/uploads/1/3/0/8/130874049/7e7bb4efb1.pdf
    • http://files.johnsonwriter.com/uploads/1/3/1/8/131871705/wowig-rabusisajela-dutejisuzanuxe.pdf
    • http://kezoma.cpmbl.com/uploads/1/3/1/8/131856022/b31d91a2a662.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/83432355313.pdf
    • https://cdn.shopify.com/s/files/1/0432/0487/0305/files/brown_1981_rock_characterization_testing_and_monitoring.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0350/files/camidoh_yawa_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/75431600428.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/reporte_garita_san_ysidro_tijuana.pdf
    • https://cdn.shopify.com/s/files/1/0432/3452/5347/files/technical_drawing_frederick_e_giesecke.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/79243450702.pdf
    • https://cdn.shopify.com/s/files/1/0435/8933/7256/files/determiners_worksheet_for_class_9.pdf
    • https://cdn.shopify.com/s/files/1/0428/6329/6678/files/3130831820.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/vaxonalulojureme.pdf
    • https://cdn.shopify.com/s/files/1/0437/4547/6757/files/accumulated_depreciation_balance_sheet_presentation.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/antibiotics_simplified_free.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_off00007f9c.bin
adbcf4d700a46df4a5b0176b33b00627ae462870a9ce718f73812cfab21e573c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9C 5268 bytes
font_01_sfnt_off000091a7.bin
1bcf92a98300f548c335c2f37f47f2b84a725269ab81d5124170c361e24b705c
pdf-font-stream PDF embedded font (sfnt) at offset 0x91A7 12216 bytes