Malicious PDF — malware analysis report

Static analysis result for SHA-256 f076a781373e8c7d…

MALICIOUS

PDF

47.9 KB Created: 2020-08-04 23:54:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecee0adbd0d3fafe41df7bb451204ca2 SHA-1: 1cad7a1db55d35fdd5fb19fab2dd8a6139b1822a SHA-256: f076a781373e8c7d4d02783e975231a3747e904bca920f6ead5672859c4a3a3c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector. The document body is heavily obfuscated but contains a URL that appears to be part of the link farm. The primary attack pattern involves leveraging these links, likely for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness.

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.ru/pify?keyword=3+day+split+workout+routine+for+mass+pdf In PDF document text
    • http://files.authenticatex.com/uploads/1/3/0/7/130739095/vaguxoles.pdfIn PDF document text
    • http://files.robertwburroughs.com/uploads/1/3/0/9/130969562/xumiwelofuwadigege.pdfIn PDF document text
    • http://files.theofallonantlercompany.com/uploads/1/3/0/9/130968949/5821f7b214b51c.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/1/0436/6175/4518/files/41711192711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/51160781574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/vipekoxipalude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/ubuntu_14._04_install_nvidia_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/92403073244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/romosapexetilimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/turbo_charged_prelude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0400/1443/files/acadia_national_park_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0404/6997/files/cogito_ergo_sum_explanation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/vovanifunevedofolago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/tagirokowixunufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/wegilibixebewodavov.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 5

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_off00007d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D73 5512 bytes
SHA-256: a0d4951fca447fbca3f6eaa756bf435449892693d15741307796cd7ac48aa3be
font_01_sfnt_off00009036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9036 10104 bytes
SHA-256: d20941310399d100599778b935d2ad490850edc7610570db71e33c982cbde977

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