Malicious PDF — malware analysis report

Static analysis result for SHA-256 3034545d09f435d1…

MALICIOUS

PDF

55.4 KB Created: 2020-09-04 19:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 147d809e654eb3c8d4667134c045809c SHA-1: 9af85135cf2df3e1afecd8d594b6672d6410d6e5 SHA-256: 3034545d09f435d1ab332b908d0d3e0c90aa3cd9094069d0952f7afe7c16e9d8
152 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.club/wix?keyword=kingfisher+plc+annual+report+2016'. This URL is embedded within the document body, suggesting a social engineering lure to trick the user into clicking it. The ML classifier also strongly indicated maliciousness. The file appears to be a link farm designed to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/wix?keyword=kingfisher+plc+annual+report+2016
    • https://static.usrfiles.com/ugd/b8c837_17772981c6da43f3936d302466e8daf8.pdf
    • https://static.usrfiles.com/ugd/69695d_47cd1391aac24519aafc21a8ef654670.pdf
    • https://static.usrfiles.com/ugd/756799_4428aca1280d48e8b988980d1420646b.pdf
    • https://static.usrfiles.com/ugd/86319b_a89d351596a74c02a8035c81deffb10a.pdf
    • https://static.usrfiles.com/ugd/9d24cb_030d74dfe18645acb591b6273cf49780.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/39669119718.pdf
    • https://cdn.shopify.com/s/files/1/0447/9241/4369/files/jquery_resizing_images.pdf
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/71157477311.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/54977781829.pdf
    • https://cdn.shopify.com/s/files/1/0432/8318/5832/files/audio_visualizer_creator_2._0v_free.pdf
    • https://cdn.shopify.com/s/files/1/0465/2957/7118/files/jofuvujumojaferuxarike.pdf
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/70121218918.pdf
    • https://static.usrfiles.com/ugd/1d3654_c9fec7c2615d4f56ba09ef5a3d5068b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_73bd2cffd2074b3da95b4760d81bd000.pdf
    • https://static.usrfiles.com/ugd/c162b3_b0371ff5cc084b9fb831c47cb5cd4ed2.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_off000099f9.bin
f3ed92a014bcc8f84e1b363f219bf359e5b2ba131a591a5276b50548f9cd8bc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x99F9 5724 bytes
font_01_sfnt_off0000ad8e.bin
f516a18a84f0a2cb887a6382f799c61abe92dfa41a345383d2509d451c7d1ca4
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD8E 10264 bytes