Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e62f1f53e4eecc…

MALICIOUS

PDF

41.5 KB Created: 2020-11-05 05:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 39fe3ba37f3ff8bff618379d40e20120 SHA-1: 2feb9bc0dd4551a26f15d1bc8ebea2975014bbc6 SHA-256: 56e62f1f53e4eecced0f59e3f1bd4dac94ddc5b51401b8da7dc2dbd2fe61d162
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to disposable hosting services and are likely part of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting an attempt to direct users to malicious sites. While no scripts were explicitly extracted, the PDF structure itself facilitates the embedding of links, which is leveraged here for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/123?keyword=trombone+slide+chart+upper+register In PDF document text
    • https://getawotenag.weebly.com/uploads/1/3/4/4/134443600/8937082.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/5067064.pdfIn PDF document text
    • https://woniwisupu.weebly.com/uploads/1/3/4/2/134266019/xenede-moxot-nujuze.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/pikurugunugepa-jadawafa-piliwusanewe-bofilivogovi.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/871e3e19a240e68.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/fedodanotiko_kesokozerekiwuv_gozobaruz.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/9676c30d-7da4-4f09-a82b-5885deb60529/dinova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5086/4287/files/secret_goldeneye_mouse_and_keyboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2efb0125-f65f-4f88-945d-23aca9f97a12/59520826062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8537/0022/files/832480114.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/51659797169.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_off0000621c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621C 5576 bytes
SHA-256: dfd6843d4c6ce4a60bdedd74750ea5ce0b16aeb1b9547d6c6971500238938930
font_01_sfnt_off000074d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D7 10764 bytes
SHA-256: 6dd47f201f4d04fcc3c82e05f14056ac69fe5448722aa43636e3821e601e7f10

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