Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0db4e1c05594d59…

MALICIOUS

PDF

40.6 KB Created: 2020-08-08 09:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53bf8dd52c61bfd94b36ffd37de053de SHA-1: 015969ca3072e89d8fe700fc7b637f26dff52f1e SHA-256: f0db4e1c05594d59f74e974497c3e74c48e631d463a3fbef950ab73f2ec1d929
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL that is flagged as malicious. This indicates the primary purpose is to lure the user to a malicious site, likely for phishing or malware distribution.

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=english+in+biological+science+ian+pearson+pdf In PDF document text
    • http://zinura.consultaire.co.za/uploads/1/3/0/8/130814921/xilij_nuwobosi_luferewule_motefedisilevi.pdfIn PDF document text
    • http://files.softandsound.org/uploads/1/3/0/8/130873902/93623c0a3919.pdfIn PDF document text
    • http://fiwobolav.barryshlachter.net/uploads/1/3/2/3/132302978/botixal.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/1/0430/5698/8317/files/36706504521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/zesuwanukakinaxiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/bushcraft_attitude_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/bsc_courses_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7685/9544/files/hedonism_in_a_sentence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/93955963272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8315/9969/files/jodademux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/62732074213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/tony_stark_mansion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/71418521454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/42132015011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/vetifojakapokuluxonebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3766/2103/files/l_argumentation_en_francais.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
🗂 Part of campaign: softandsound.org 3 samples

Related samples 3

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_off00006121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6121 5512 bytes
SHA-256: 89ab8e28fc0bb765e21a50da0bfb4a53914f296ec66183d7a53fbb54357a8605
font_01_sfnt_off000073d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D9 9692 bytes
SHA-256: 6256183833c5c0507eb35f132f903992356a494485863f5f11e5df21bdcb6b24

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