Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f050a6b41c7da66…

MALICIOUS

PDF

56.0 KB Created: 2020-10-03 01:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3f7ea1b74e8e1beb7e1099e0bf74f328 SHA-1: d75b6eef83bad1bc38c9b8f1121a63ab8a0fe3a6 SHA-256: 1f050a6b41c7da660479c142b1027df4ddc50638d8395b70cef1fc811f42ea7a
184 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many pointing to disposable domains and redirector infrastructure, indicating a link farm or SEO poisoning attempt. The primary URL, 'https://ttraff.club/pify?keyword=swtor+armormech+guide+700', suggests a lure related to a game guide to attract clicks. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious redirection, likely to phishing or malware distribution sites.

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.club/pify?keyword=swtor+armormech+guide+700 In PDF document text
    • http://files.opkmanitoba.com/uploads/1/3/1/1/131164386/xefufipedelojut.pdfIn PDF document text
    • http://ripavojow.drdom.com.au/uploads/1/3/1/4/131407406/gewovax.pdfIn PDF document text
    • http://files.charleybarneswriter.com/uploads/1/3/2/6/132681479/a8c2c10e.pdfIn PDF document text
    • http://files.marosenbergartist.com/uploads/1/3/2/6/132695828/1275055.pdfIn PDF document text
    • http://files.daniellesusi.com/uploads/1/3/1/6/131606268/6149620.pdfIn PDF document text
    • http://pawusi.driesneyland.com/uploads/1/3/1/0/131071258/41f9adcdc0a.pdfIn PDF document text
    • http://files.raygalleryny.com/uploads/1/3/2/6/132682303/888b34f46c0af9.pdfIn PDF document text
    • http://files.blankthehub.com/uploads/1/3/0/9/130969967/rironaverexowamuk.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/b8ca8601-00e5-4cfb-83d0-2a1a27701192/pivulewenobim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a530ec-99c3-46d9-aef5-374cc876691d/vatijuzabiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/880bda6a-ed5b-4581-88c8-71bf24a11057/80403949774.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/882ac1e8-f6e7-4c83-a0b0-c4e26c60c041/famexinirolewuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/045c11a3-4235-4fa6-9e02-3fbb962403f7/11004943644.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_off0000957a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x957A 5560 bytes
SHA-256: 6a5b268b8183f6fb4b61b30eaff672938d72cbbf0a32481ada681810b51106d8
font_01_sfnt_off0000a851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA851 13448 bytes
SHA-256: a3297af9ec438c8b92df4952ac059b333578641bf86c861c4a665feffd82b106

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