Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed0b8715c883b37…

MALICIOUS

PDF

44.1 KB Created: 2020-11-05 20:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 48b0908efbb06206e9be06ddb7725ad9 SHA-1: e48eacd8716f9695f978ca45a553264e2d2b2942 SHA-256: 1ed0b8715c883b3766ba20fcf913f34089dcc3a76efe73749e38ed941a8b4398
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it's part of a link farm designed to generate search engine traffic. It embeds an external URI pointing to 'https://trafffi.ru/aws?keyword=duo+therm+motor+wheel+corp', which is likely a malicious or phishing domain. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the structure suggests it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=duo+therm+motor+wheel+corp PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5f8f5f4b09507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409236/normal_5f94329ee141c.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bewoti.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/niwatewugaxad-beluza-welofined.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422627/normal_5f96ceed5ea47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f88104b891ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5f906eb6bbc42.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/16e73603-06e4-4a22-8e87-a1d8b4975ffc/demons_imagine_dragons_mp3_download_soundcloud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27cea47-e012-46ab-a6ce-9dff992bad91/kadovusubumoseg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f7bddb4-a0bb-4871-9ccf-2a182143fa52/bounty_hunter_1100_metal_detector_ma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7610f06a-87b0-45ee-8451-a1608a84b3a8/5316066548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80dae6f7-0154-48ec-bbef-0703fb96f8f9/how_to_add_friends_on_activision.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9c2fbbf-5034-4a7e-93a1-a7b0ec4d816d/58786456030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def46286-e527-45a5-9c91-91d39dbdde06/dizitiwirifesakuxup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2380484-fcee-4685-8b7f-6197ae93461e/padizirijirogiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b5d62b-4424-43c1-9dfe-9440c9e9e33e/lokaratugatevufataz.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E44 4876 bytes
SHA-256: 35c303c9adc252a18f3de52bc476ae17d3fe0171fbcee716bedf7154b317ef1e
font_01_sfnt_off00007ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC2 10956 bytes
SHA-256: 826671da95d3f83788bd589b2164a7924f397c59c9f84343c55d295c3fada04c

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