Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f22b1054159fee…

MALICIOUS

PDF

42.9 KB Created: 2020-09-16 03:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e90e8351e8c65ab2aef7c9a42a6ce509 SHA-1: c5906f3091a93f532a554db2c81133ee47197bd3 SHA-256: 66f22b1054159fee1fe477a1d37096ad7f3d3503b95f780047662edaf517dbf1
184 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as part of a malicious redirector infrastructure or a link farm. The document body, though partially corrupted, contains text suggesting it is a 'presentation editor for PC' and includes a URL that points to a known malicious redirector. This indicates a likely phishing or scam attempt to redirect users to malicious content.

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=editor+de+presentaciones+para+pc In PDF document text
    • http://files.evelynblack.com/uploads/1/3/1/8/131872138/3eca4d3ca36f.pdfIn PDF document text
    • http://guzitomup.mymollydoll.com/uploads/1/3/1/3/131398101/8215470.pdfIn PDF document text
    • http://files.laniergsa.org/uploads/1/3/1/3/131383760/e7eedca534f.pdfIn PDF document text
    • http://files.jeffreyburghauser.com/uploads/1/3/0/7/130776573/5457650.pdfIn PDF document text
    • http://ritezak.ptcwyoming.com/uploads/1/3/1/6/131606289/mugogazariru.pdfIn PDF document text
    • http://files.tristatemaxedoutwomenspac.org/uploads/1/3/1/4/131407247/6303637.pdfIn PDF document text
    • http://files.theuniform.store/uploads/1/3/0/9/130970003/8792577.pdfIn PDF document text
    • http://files.gbartistsassociation.com/uploads/1/3/0/7/130776728/zipelurusativuki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/fafc38_93e303203d2d4454a4e871cb64ebddd4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3be3a7_fc3ca77a98bd452e840b5f1bfaf8ee32.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/008e52_37aa939637154109912b78a861dbad9e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ce5d00_0641fa05a67d44e8aa13eb6d75e79634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/0899/1905/files/alibaba._com_app_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8030/2240/files/aranmula_palliyodam_song.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_off000066c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C4 4992 bytes
SHA-256: 0ab0d7c2ba35b5de781b0a8ff9d152e628b4f0072c083b1511edc40725ca64bc
font_01_sfnt_off000077cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CF 11356 bytes
SHA-256: 62d018340b17f020b81738c37e61368922c21fdcc3694a8121cd2ad8d88efd80

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