Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e30db7620350e5…

MALICIOUS

PDF

40.9 KB Created: 2020-08-15 00:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4066efc22b36b5205e951caf2ad6f71c SHA-1: f15d52a4b5e6693efda5c1e543d2cc9438cb1d98 SHA-256: e9e30db7620350e5f359a38e620990e976bc1f0aae513613be4ed69bc073f926
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered this heuristic. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=thyristor+principle+of+operation+pdf, which likely serves as a lure to a malicious payload.

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=thyristor+principle+of+operation+pdf
    • http://files.authenticitycoachinglondon.com/uploads/1/3/0/9/130969054/1653698.pdf
    • http://zidajaxon.foschia.ca/uploads/1/3/1/3/131382078/vebuzixiwos.pdf
    • http://files.shoprlsg.com/uploads/1/3/1/4/131483009/duzilulogegen.pdf
    • http://files.jvjewelers.com/uploads/1/3/0/7/130740026/5200e3cc6.pdf
    • http://files.howesoundwoodcrafters.com/uploads/1/3/0/7/130739480/4895937.pdf
    • https://cdn.shopify.com/s/files/1/0431/9484/3298/files/seluvakafapazudewisodad.pdf
    • https://cdn.shopify.com/s/files/1/0433/8899/3699/files/202705712.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/movugiboramufojafofala.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/muriatic_acid_msds.pdf
    • https://cdn.shopify.com/s/files/1/0433/5153/9861/files/nirujozitawebikokijufix.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/first_rank_raju_full_movie_movierulz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/oxford_cardiology_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/bharathiyar_songs_with_meanings_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0430/7766/4929/files/35344893228.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7980/files/the_anglo_saxon_chronicle.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/34069971827.pdf
    • https://cdn.shopify.com/s/files/1/0449/1198/4795/files/business_goals_2_cambridge.pdf
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/etiologi_keratosis_seboroik.pdf
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/74253721393.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_off000062c9.bin
92891e012fb4b3c32269e3f15e5621fde1d02842e3972f2fe18a1e5eb33a262a
pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 5296 bytes
font_01_sfnt_off000074c4.bin
2dd90ce7fcf751adc324728e5ab8b899f34ebeada51085541815b4634522a998
pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 9852 bytes