Malicious PDF — malware analysis report

Static analysis result for SHA-256 0631fc82a394e1fc…

MALICIOUS

PDF

42.1 KB Created: 2020-08-10 20:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7837bd25f811cd34b6b5c7c10283c31f SHA-1: f50f7db7ce0946c377c87acb83cbff7a8f047edf SHA-256: 0631fc82a394e1fc94b0b1cb4151742d968c09821b734cb05297196c0af290d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary redirector URL is https://ttraff.cc/pify?keyword=statistical+analysis+of+network+data+in+r+pdf, which is likely part of a phishing or scam campaign. No scripts were extracted from this sample.

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.cc/pify?keyword=statistical+analysis+of+network+data+in+r+pdf In PDF document text
    • http://files.emiliyaahmadova.com/uploads/1/3/1/6/131636988/4e5878657ac.pdfIn PDF document text
    • http://files.highdefsalon.com/uploads/1/3/1/1/131164398/lasosis-vevetebagiviro-fiduwov.pdfIn PDF document text
    • http://files.antisepsis.net/uploads/1/3/1/3/131380788/sedumaloxetarezumure.pdfIn PDF document text
    • http://files.chapterncg2.org/uploads/1/3/1/1/131164431/88fabe5a2.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/1/0429/8863/4266/files/59659087227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/nimadone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/amazfit_bip_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/pukumudunukakufegomikit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/6121963987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0757/4179/files/fodutamusasufefukukopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/86097127905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0482/0631/files/37113521050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1597/7630/files/50572814383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/gujevixusibezejemew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/22721338302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/adeptus_titanicus_titandeath_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2709/files/lerawijekigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8310/8253/files/bronkitis_akut.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_off000064ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64ED 5508 bytes
SHA-256: 3b353d76a67736138dec2180d5e0eb2590db5fa47c83c6c742aa6c1cbbf780f0
font_01_sfnt_off000077c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C4 10428 bytes
SHA-256: 3aab128f5a8f0de28c296063de382fafabb1704315265139f95d7a03abc6ff1f

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