Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd1a8211e3a353b…

MALICIOUS

PDF

52.5 KB Created: 2020-08-26 14:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd34c4899e9507ebb538032f5c6e427b SHA-1: af1f09d6ec38ab7049e586bb515995a6df98f4e7 SHA-256: bbd1a8211e3a353b6118f38da0db71c3dfab9a60bde544d6dc90d0153b187b02
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=john+macarthur+systematic+theology+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a PDF link farm heuristic further supports the malicious intent of distributing external links. The ML classifier also strongly flagged this PDF as malicious.

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.link/pify?keyword=john+macarthur+systematic+theology+pdf
    • http://files.act-sat-tutors.com/uploads/1/3/0/7/130775734/zekasijogonamarapu.pdf
    • http://fomiju.emsactors.com/uploads/1/3/1/3/131380845/gazazanufepazifabuwo.pdf
    • http://files.amyhandelsman.com/uploads/1/3/0/7/130775362/noxuxamudikevoruvaz.pdf
    • http://files.gregsmolka.com/uploads/1/3/1/1/131164312/jonoke_fusuvaru_wogotepimeg_rugoperijasenu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9785/0010/files/website_registration_form_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/gesapoxuzavesok.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/75432839754.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/damusinudorabok.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/play_store_video_game.pdf
    • https://cdn.shopify.com/s/files/1/0457/3659/1526/files/simiwoxavawexilufelotef.pdf
    • https://cdn.shopify.com/s/files/1/0431/2698/0770/files/fake_address_new_york.pdf
    • https://cdn.shopify.com/s/files/1/0460/1289/1297/files/warefifi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/sevepuwusamemivu.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_off00008e54.bin
a75f591c0e65a7938a75deb5e9b2df427876a7810b9999e36eccfdec0c349c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E54 5660 bytes
font_01_sfnt_off0000a16a.bin
1f41f367790e3403a5b4a7b73f5c51d1eb5f44f28796c08ebc3be2a2be92f66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA16A 10452 bytes

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