Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec39143e89190f7f…

MALICIOUS

PDF

44.2 KB Created: 2020-10-28 15:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e364dc8cff10435389eb55ee8c2c5c0c SHA-1: df22534dfdfe41d90c7d2d0f99fc808846df7601 SHA-256: ec39143e89190f7f976a12e4bf69fa9021e945d3454536400a409e2b0d6ecab8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://cctraff.ru/aws?keyword=pachmayr+1911+grips+uk In PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/16a73e.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/lifezevu_viteti.pdfIn PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/wokemawudire_kikogivip_lufujolaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1506e66b-c411-45ab-92c0-db763691899d/sutufasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/ootp_perfect_team_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0459/5861/files/73945856327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8167/0042/files/65439149895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1132/6108/files/37411999450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/8697/0779/files/2020_chevrolet_tracker_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c93a4d70-697d-4ca5-880c-c859ee7a809d/12981739844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0d11920-10d0-47d8-9e02-d7ba73627770/golden_colorado_homes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1508/5473/files/fujifilm_xe3_manual_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00697303-1bb9-4df9-aecd-ebb202257383/tsql_if_else_multiple_lines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5e669b9-d421-4046-b10d-b5363587a83b/37679726023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8039/3900/files/petiwudodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bafe20e-6b5a-4642-a5db-bb4905cbe82b/ge_oven_326b1230p001_manual.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 5692 bytes
SHA-256: 9da68a0422e483b6103061ef8289ed617fb958accc4e3169caea48545bcde0d7
font_01_sfnt_off00007f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F09 11044 bytes
SHA-256: 3db45fa8c47b06136dae79518a47fa66494e8cfdbc824b826a8c7facbbaa09e0

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