Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a45c2cf4f395850…

MALICIOUS

PDF

41.7 KB Created: 2020-09-18 11:37:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 351d353feefe7a547903951b009aabc4 SHA-1: 4caa00e4d1ac02976fd2a2a91c1c2cec345c3900 SHA-256: 7a45c2cf4f395850b57f0b4fa2aaae3fd815a7d24dfbc11f70a68d24ec13122b
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, disguised with keywords like "Rappelz leveling guide". It also features a large number of links to other PDF files, suggesting an SEO manipulation or link farm tactic to obscure malicious activity. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs points towards a phishing or redirection scheme.

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.me/wix?keyword=rappelz+leveling+guide In PDF document text
    • http://judok.psychespiritfood.com/uploads/1/3/1/4/131437849/tefetepifune.pdfIn PDF document text
    • http://files.leenaceraveeni.com/uploads/1/3/1/4/131483445/katavexutoxuduvafok.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/1/0433/4629/6985/files/tojabeluzawidusalavipig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/jokatewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/ranugir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0565/6736/files/pes_2013_trke_spiker_v5_salam_indir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6376/7203/files/xoroluxego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/kufokorufilowoxewavuvo.pdfIn PDF document text
    • https://e166b6d7-67f8-4042-977f-1f47c0dcc6d0.filesusr.com/ugd/83e584_4ef7b5b92e2c46e8b06f108c5a9f0a9e.pdf?index=trueIn PDF document text
    • https://29f1ffc4-41cb-4bf0-aa2b-eb314b1adfa6.filesusr.com/ugd/ebbcbd_bf000a493cf2477aa4cede4a908c2290.pdf?index=trueIn PDF document text
    • https://38659d99-08d0-4b0c-904b-3f931663aef5.filesusr.com/ugd/154db6_6f65dd5c6ff74d7cb9fe48338b07a637.pdf?index=trueIn PDF document text
    • https://4fce9ef5-de3a-4b07-bb64-f054faf92882.filesusr.com/ugd/65b209_5cfa7ffc727146e0ae3c5c262b7b66d9.pdf?index=trueIn 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 2

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_off00006597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6597 4968 bytes
SHA-256: aece255a4a6a29709a177efe2b1c2f34214f742ea5af17123279ff32872c0798
font_01_sfnt_off000076a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A8 10468 bytes
SHA-256: 3e8aa9434af9fc29fa1c7fb5b3db2b89950bedb92ea932f9174d80e670d9c5bc

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