Malicious PDF — malware analysis report

Static analysis result for SHA-256 b89f591db68ac2f6…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 07:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e8933048c821249ba5aac5967178eae SHA-1: a16c72d07c00f22fd81caf11182b008cd2eaf5d5 SHA-256: b89f591db68ac2f62271dac7400fb650c1235554aba0e3be0da02aa72df95f60
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting the intent is to lure the user into clicking the link. The redirector URL is 'https://ttraff.com/pify?keyword=headway+elementary+fourth+edition+tests+pdf'. This pattern is indicative of a phishing or malware distribution campaign.

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=headway+elementary+fourth+edition+tests+pdf
    • http://keviloxa.pblohio.com/uploads/1/3/1/3/131398140/8779996.pdf
    • http://vezol.hollyhmiddouche.com/uploads/1/3/0/7/130776738/b6f02a1f673.pdf
    • http://files.mazeofevergreen.com/uploads/1/3/1/4/131407552/3f294024361da7.pdf
    • http://files.shastasjourney.com/uploads/1/3/0/7/130775959/6108419.pdf
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/wafetew.pdf
    • https://cdn.shopify.com/s/files/1/0429/6690/9081/files/12418595802.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8145/7061/files/xobajedibujig.pdf
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/48606430901.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/64156269914.pdf
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/nunopirojegalonobakowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/3858145858.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/xuwiviwesinofosupedufeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/intel_core_i7-_6700.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/40935502763.pdf
    • https://cdn.shopify.com/s/files/1/0433/9944/6693/files/xelijadawitelufivi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/advanced_engineering_mathematics_zill_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0452/2475/5357/files/risk_management_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/work_cited_journal_article_mla_format.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_off000067d2.bin
192e3d4618d1e8039df893c1e05adf457c4bd5c31af64a9a764d276f5b8e5b6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D2 5436 bytes
font_01_sfnt_off00007a3a.bin
4b78819fc3ae6cfee8bb58a5403e3569a5351e851019f9cc5ff1482b995906e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3A 10316 bytes