Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69fd25dc432f54a…

MALICIOUS

PDF

46.5 KB Created: 2020-08-11 06:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13f7cc259ba3cb7e2592771f59d5925c SHA-1: bfcc62304043031a715f93bcd0f594dbe3ad17ac SHA-256: d69fd25dc432f54a1f5056727c1bba429ae6859a90db33f66c4c17a119a6c857
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm designed to lure victims. The primary malicious IOC is the redirector URL.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=astigmatism+aberration+pdf In PDF document text
    • http://files.expert-consultations.com/uploads/1/3/0/8/130815014/kujuwodusipiz.pdfIn PDF document text
    • http://files.mayfieldorchestra.org/uploads/1/3/0/8/130814238/9251803.pdfIn PDF document text
    • http://files.barakacommunity.co.uk/uploads/1/3/0/8/130874154/266e7f1f.pdfIn PDF document text
    • http://wepadud.splitridgerockies.com/uploads/1/3/0/8/130814674/divebumugamafejup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/fevar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4477/1739/files/physical_science_grade_10_answer_series.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/11126725665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/apneia_do_sono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/sql_tutorial_tutorialspoint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/timonatiwaboluwatemedimad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2468/5976/files/the_dragonborn_comes_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4791/9522/files/7108582830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/36017906462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/lasemugadowomujam.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 4

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_off00007670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 5456 bytes
SHA-256: 1bdbd2dbf05c2b08c01b25bf670d12081d073e1e6f6f3badb6df55ce777f77c7
font_01_sfnt_off000088d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 10788 bytes
SHA-256: 42dfe292d33b92f8147d410346efec518b4e60fc2b57c053e716255004957194

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