Malicious PDF — malware analysis report

Static analysis result for SHA-256 1173ec56081d6d48…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 18:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92c188858eb1748cb2da792410c61a84 SHA-1: c1fcf7ce5cccd6ec47bc5b7c42d7612451935177 SHA-256: 1173ec56081d6d48391d5c2c917a9673e1581c383c1bade133f75ed7a01f1f4f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a link farm and redirects to known malicious infrastructure, specifically 'https://ttraff.ru/pify?keyword=aged+care+home+care+package+guidelines'. This suggests a phishing or scam attempt, likely using the 'aged care' lure to entice clicks. The ML classifier strongly supports the malicious verdict.

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=aged+care+home+care+package+guidelines In PDF document text
    • http://latet.fccwareham.org/uploads/1/3/0/8/130874422/6f924d25027c.pdfIn PDF document text
    • http://gasanigu.pentictonexcel.com/uploads/1/3/0/7/130738943/xevidawaka.pdfIn PDF document text
    • http://files.supernovabaton.com/uploads/1/3/0/8/130813108/delosidijimofezot.pdfIn PDF document text
    • http://pikadon.homesbycrosswinds.com/uploads/1/3/0/8/130813710/wofuvomoweweso.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/1/0428/9835/8432/files/12410546401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2634/files/gibag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/20141296520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/78375716317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/17785366587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5009/8078/files/jepojuxirogevajaxal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4495/2471/files/24316_chippewa_trl._moreno_valley_ca_92557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7473/9607/files/componentes_organicos_del_suelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2926/5574/files/dusomumorajexejidusunu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6623 5540 bytes
SHA-256: 2200bb00862659895547d03bc205be533d227512fc0886a0c5c9b2af42597505
font_01_sfnt_off000078ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CA 10008 bytes
SHA-256: 3aa1bff9d4384d68d740dfffe77dfcb98e5f012bb8ab5047e38c827204985305