Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba772b6411c44b2…

MALICIOUS

PDF

39.1 KB Created: 2020-08-19 03:09:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1386923ef9cebfb272eb4083e39b3558 SHA-1: 62fa37a98a46622777575f36546f7502e8282644 SHA-256: fba772b6411c44b2618d4da5acdaaa910f15b94dc393592114e8bdb83e543f40
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a medical certificate and includes the malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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=attestato+di+conformit%25C3%25A0+medico+specialista In PDF document text
    • http://dizuluw.bzzzybitez.com/uploads/1/3/2/8/132814930/3025066.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/1/0431/5663/5816/files/91718077304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/capeweed_control.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/baidu_spark_browser_2014_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/bivalideso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/juzutivafonadigofujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8509/3272/files/unlikely_animal_friends_episode_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/13881698082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/30339471995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/lazinilufugaxemuzurabob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodujanizovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3108/0605/files/atkins_induction_food_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/bakezuwurutixaluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2189/files/70105256443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7273/2836/files/zuxevosowutimuxujefozavig.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 1

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_off000057ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57EA 5524 bytes
SHA-256: 60c8a8d5127c9b233827104c59b4594a24bef90f6879b2dcd8fb14113d9abd5e
font_01_sfnt_off00006a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0E 10784 bytes
SHA-256: fce777cc140126f6dbc13c692441484ca864fb3b78b18038f16b1e76ed2bffec

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