Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f93354f9e3faca…

MALICIOUS

PDF

48.0 KB Created: 2020-08-14 03:24:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae513ced12f6e5947de9806a66153307 SHA-1: 9e8cd97c40617019ea623f66d8a5ac96133e2ee9 SHA-256: 47f93354f9e3facacd21a20965a504c83f4b046466bb7446ab95f9d8a4563088
150 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to domains associated with link farms and redirectors, including a critical finding of a link to a known malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=codingbat+python+warmup+1+answers, which is likely intended to lead the user to further malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=codingbat+python+warmup+1+answers In PDF document text
    • http://tizoveguk.cocoandtoto.com/uploads/1/3/0/7/130775971/devoxu.pdfIn PDF document text
    • http://vuxekipiw.orangevillenaturopath.com/uploads/1/3/1/4/131406744/depit.pdfIn PDF document text
    • http://files.fbcpc.us/uploads/1/3/1/3/131379899/judoderowirugiwom.pdfIn PDF document text
    • http://files.maryellencarsley.com/uploads/1/3/1/4/131406558/sovuwikasaxogume.pdfIn PDF document text
    • http://files.singlevacations.ca/uploads/1/3/1/4/131438216/xajemaleju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/73236972134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34680977850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3994/7932/files/53824576491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/pepusejaxigezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/dulavitodudodak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/99306441880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/wixokexibut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0990/8642/files/97948761032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7308/4319/files/holy_aura_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/investor_pitch_presentation_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/76244040641.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724e.bin
cca62f23f50fcef4c995bbffa37b95f063c4bdad1bf1bfc577245fce267254ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 5632 bytes
font_01_sfnt_off0000855d.bin
05895dedc8f1c62c2626676a82d521a77d0094230ad2b88bfbdd43e0ea50604d
pdf-font-stream PDF embedded font (sfnt) at offset 0x855D 14332 bytes