Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a0748801e8c1aa4…

MALICIOUS

PDF

47.1 KB Created: 2020-09-12 00:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c040a05a867dbfda5554ec65358a3ef SHA-1: 371b6a36356597131e79c40bee41652ae70d5ba6 SHA-256: 5a0748801e8c1aa4e66a263215be047eab9a4ca33c805b94682e0a29a7acadea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector disguised as a search result for 'how many sheets in excel 2007'. This redirector likely leads to malicious content. The document also functions as a link farm, pointing to numerous other PDF files hosted on various domains, suggesting a SEO poisoning or content spamming 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.me/pify?keyword=how+many+sheets+in+excel+2007 In PDF document text
    • http://files.wolfemountain.com/uploads/1/3/1/6/131636978/fufitosavivodu-lajugigise.pdfIn PDF document text
    • http://files.nvclosedeals.com/uploads/1/3/2/6/132681647/pinopiredumuz-veviwonip-xuvigopoki.pdfIn PDF document text
    • http://files.collegepark4u.org/uploads/1/3/0/7/130739415/9700813.pdfIn PDF document text
    • http://dakakaxi.thewaveinspired.com/uploads/1/3/0/7/130775219/kowavolavad-gawiwelepoledo-fikufufep.pdfIn PDF document text
    • http://files.creeksideband.com/uploads/1/3/1/3/131384789/3301404.pdfIn PDF document text
    • http://files.publichealthmuseum.org/uploads/1/3/1/3/131384789/a826b1b39.pdfIn PDF document text
    • http://bogew.barcfriends.com/uploads/1/3/0/9/130969264/363dbad.pdfIn PDF document text
    • http://xoperuji.bitcoinerpro.com/uploads/1/3/0/8/130874050/7899354.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/a0905b_9d22cb56aae84a88a5eaee7a908e5a85.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_645c089ac308464b8c1b746283966581.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/564d2e_b94089da39274b908b92897028ffd983.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/de02f3_f62a0d9737ea411784be94bce8712441.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c0b427_3ae79ad648fa477ead2f7239734e9205.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ce0e6d_1d7f728feb2b4cceb06b1786d8c3c38f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a838c0_0f8fb67358744676b832949cc42e3154.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6557 5520 bytes
SHA-256: 0439a5ba0796287cdb8225bdc683495596437e2aec57a1c0cf6dd9d061623fc3
font_01_sfnt_off00007815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7815 9944 bytes
SHA-256: a1d5154277c22eda2a9f9bd6560ce8b0587d59bceb77cc662aab9c8ae13606d1
font_02_sfnt_off00009a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4D 16144 bytes
SHA-256: f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d

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