Malicious PDF — malware analysis report

Static analysis result for SHA-256 572478c3ead54c7a…

MALICIOUS

PDF

52.0 KB Created: 2020-08-06 05:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f68f40ddf5faa43e4551509fdbc4079 SHA-1: 146558167ba430596a0035c31c92d872e175d566 SHA-256: 572478c3ead54c7a7bcdaf5ffb42c77531a9db37c9035850231f03a16caf4552
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=aldehydes+and+ketones+multiple+choice+questions+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure under the guise of providing academic resources. No scripts were extracted from this sample.

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=aldehydes+and+ketones+multiple+choice+questions+pdf
    • http://files.kimmariejohnson.net/uploads/1/3/0/7/130740496/kuxasonolonuzi-malaja-rozafijekatise.pdf
    • http://files.gnteachers.net/uploads/1/3/1/6/131636941/sibivobofer_mifotakefila.pdf
    • http://files.collegebound.org/uploads/1/3/1/4/131483266/fupuga-xawetil-sigamufivofe-teludaru.pdf
    • http://files.neksscottishrite.com/uploads/1/3/1/0/131071056/2c1e2872c.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/86172685851.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/dezefanavevekofomusiwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/tonudasogonuvorogo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/zajinulitutalalivaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/22064433057.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/mefitugesajutalorufelo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/99573550762.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/77789878361.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/96101929.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/narewetojosuminu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/20546560931.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/sublingual_route_of_drug_administration.pdf
    • https://cdn.shopify.com/s/files/1/0433/3315/7014/files/peter_lynch_beating_the_street_download.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
font_00_sfnt_off000075a2.bin
b5d6264337caf7316780fea92b07ecd5a9c4ff1fea0506e4af92925e487cd0cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x75A2 5580 bytes
font_01_sfnt_off00008880.bin
28fbd51b40871ff6eb50f0383583d115f9361719ca99db421b8a4b44f546fcb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8880 10760 bytes
font_02_sfnt_off0000aced.bin
876a492742399fe191e87d3d7458503b05a019c62766f9503ce397c389efba8c
pdf-font-stream PDF embedded font (sfnt) at offset 0xACED 16304 bytes