Malicious PDF — malware analysis report

Static analysis result for SHA-256 1145a29781f9ad88…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 11:09:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe6f7e9082a6abb56dfcb78e72086160 SHA-1: 44881710084e5092c6557f0c2fcc6fde59b58f32 SHA-256: 1145a29781f9ad88009bceacff6567b3ee87f178677211af2ef56a55801143c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating an attempt to lead users to malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded content, though heavily obfuscated, appears to contain the redirector URL, suggesting the document's primary purpose is to facilitate a malicious redirect.

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.com/pify?keyword=bates+motel+5+temporada++mega In PDF document text
    • http://files.berkeleyltc.com/uploads/1/3/1/3/131380094/gabusisa.pdfIn PDF document text
    • http://talibi.southwestpaddlecompany.com/uploads/1/3/1/4/131437812/babid_lemumini_jodikiku_losubudur.pdfIn PDF document text
    • http://files.laurajanestanfield.com/uploads/1/3/1/3/131381450/gerilix_vesewoxotala.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/1/0438/2579/1138/files/linkedin_share_link.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/pukesomasobenepizekozanid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9630/4803/files/good_answer_to_how_are_you_doing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/febazebasoxigiraxoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/soxorafemawuvelutuwufekol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6175/5555/files/74153028327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/organic_chemistry_for_bsc_1st_year_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8879/8111/files/algebra_1_regents_2019.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 3

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_off00005067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5067 5452 bytes
SHA-256: 9486d1187f478e789624bf8e4964d3e0894f01f0557a3170d5e7dde039eb8ea4
font_01_sfnt_off000062d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D6 13076 bytes
SHA-256: 28ae129956520c56779cd357c7955f8c61792d409a1d1d377eb65c3c1b28f949
font_02_sfnt_off00008b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2F 16288 bytes
SHA-256: f5dc0604138e793d9c73a6fcfd7242a7d0fce5cadd585302060b06131659a494

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