Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7920b7f40101729…

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 19:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3baed83cda8ac3eb416cb81ccdc209a0 SHA-1: 6251f10628d42ad1d8bfbec642a0eacee3ea7137 SHA-256: c7920b7f40101729b83c8ac627442309d264ff2533c6476563274db5fa5cc839
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with multiple embedded links pointing to various resources. One critical heuristic firing indicates a malicious redirector link, specifically `https://ttraff.ru/pify?keyword=pneumonia+vaccine+information+sheet+2019`. This suggests the document is designed to lure users to malicious infrastructure by disguising the link as relevant information. 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=pneumonia+vaccine+information+sheet+2019
    • http://famuku.mkgcleveland.com/uploads/1/3/2/7/132740480/binojosug.pdf
    • http://files.allamericandoorofindiana.com/uploads/1/3/0/7/130775403/zurisepovapuji.pdf
    • http://nobad.cnyshotgun.com/uploads/1/3/1/4/131409090/mofiweluzeteli-fumiwolabitab-wijelewumopome.pdf
    • http://files.amberradiancereiki.com/uploads/1/3/2/7/132710654/nepaduzibiba_fuvewejixom.pdf
    • http://sefusoba.the-last-word.org/uploads/1/3/1/4/131438356/gilezarulogugexuvo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/luddenham_primary_school_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/3808/0167/files/katabilof.pdf
    • https://cdn.shopify.com/s/files/1/0439/2045/7883/files/no_man_s_sky_salt_refractor.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/rozidozapidepe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/john_eldredge_captivating.pdf
    • https://cdn.shopify.com/s/files/1/0443/4237/8652/files/coronary_artery_disease.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9021/files/bean_movie_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6774/files/biotechnology_and_drug_development.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/
    • https://cdn.shopify.com/s/files/1/0429/2627/6774/files/biotechnology_and_drug_developme

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006023.bin
6dad602af02ee78fe33dd7f4080001db4006fc308b0844524728e4d082031e6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 5632 bytes
font_01_sfnt_off00007325.bin
c99aa03da6db2253599f4a60b02b6683af5113547a997bb3284aaad3f14d6909
pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 9596 bytes