Malicious PDF — malware analysis report

Static analysis result for SHA-256 5506e0f3d4d7c2b7…

MALICIOUS

PDF

50.4 KB Created: 2020-08-12 03:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6033ea9481faa7956c6eb12c285314d8 SHA-1: 123e08dedc05c0a65fd0161fa143ae0bae563928 SHA-256: 5506e0f3d4d7c2b7e69264efb65c02d951395773256f100565f6f8f67f3263ae
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=oracle%20rac%20interview%20questions%20pdf'. This URL is embedded within the document's text, disguised as interview questions. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious link is the most critical IOC.

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.cc/wb?keyword=oracle%20rac%20interview%20questions%20pdf
    • http://files.eesalon.com/uploads/1/3/1/0/131070247/6194954.pdf
    • http://doxogole.nwbars.com/uploads/1/3/0/9/130969723/futegijitekited_demukosag.pdf
    • http://files.sherieunfiltered.com/uploads/1/3/2/8/132815961/a59b4b501cc8.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/97696441962.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/a_k_jain_physiology_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/37342287993.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/kexul.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/arithmetic_logic_unit_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9006/files/39044404859.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/44334958672.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/2017_honda_crv_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/kafasumotonedikoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/polaja.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_off0000855f.bin
8e443e199c51e7c731ef4a09063b962415ea35a00b2f3841052f222afd8cef26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x855F 5452 bytes
font_01_sfnt_off00009809.bin
12ca4ac13fcf8338d03ab6824bd55d9a430c1bfa45129f4706a247646f3829a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9809 10760 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.