Malicious PDF — malware analysis report

Static analysis result for SHA-256 8963e2ae863d5e3e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-08 22:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93ec46fbd2e3d1393bfe449492561534 SHA-1: c1ec2aad0bb9c3042b8f4caa6fae2402a694b8d2 SHA-256: 8963e2ae863d5e3e53988a4cf2f0bd4dd567e1087a279ca476bb28e36f9c42f9
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, masquerading as educational material. The primary malicious URL is https://ttraff.ru/pify?keyword=grade+12+ncert+chemistry+textbook+pdf, which likely serves as a redirector to further malicious content. The document body itself is heavily obfuscated and contains embedded URLs, reinforcing the malicious redirection pattern. 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=grade+12+ncert+chemistry+textbook+pdf
    • http://files.carlylelabuschagne.com/uploads/1/3/1/6/131606789/rivebila.pdf
    • http://files.kathrynthornton.com/uploads/1/3/0/9/130969800/nefisaxeda-fesizotivek-zirerejoda.pdf
    • http://files.aroundandbackagain.com/uploads/1/3/1/4/131483955/tojusi_maforen.pdf
    • http://rotiridij.ttsvoronos.com/uploads/1/3/0/8/130814229/fizovosadozen-durugepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/70165231966.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/64909309386.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/bijolagujewepajade.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/bederuduko.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/65703840491.pdf
    • https://cdn.shopify.com/s/files/1/0437/2407/9254/files/weather_alexandria_va_hourly.pdf
    • https://cdn.shopify.com/s/files/1/0437/8443/7922/files/abyss_miniquest_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/cognitive_affective_and_psychomotor_domains_of_learning.pdf
    • https://cdn.shopify.com/s/files/1/0433/8699/4855/files/top_100_songs_of_1977.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_off00006033.bin
285265094b7745c83db08d8df53e13427bc1c63a528bdfcce81d057805a48cbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6033 5952 bytes
font_01_sfnt_off0000745d.bin
1eef8968d5a56032fe43817c2bfada6960d684faa840d96132da067a37ae5742		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745D 9920 bytes
font_02_sfnt_off000096a7.bin
aa0141ef1983ca6a1e75555c5f201f5e267198d67577c6d264f88900ae5ec0d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96A7 3260 bytes

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