Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a797ed9fd3ef77…

MALICIOUS

PDF

44.9 KB Created: 2020-08-10 03:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ba0b04f07483586ec8d96cc0037d965 SHA-1: c61dc56934df5995615c0d9d61572e97f67eda11 SHA-256: 04a797ed9fd3ef77f205556c3f1a827585968a885fb212864c58a49f46dcbd0d
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically `https://ttraff.ru/pify?keyword=actos+administrativos+de+los+presidentes+de+bolivia+pdf`. This technique is often used in phishing campaigns to disguise malicious links. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded URLs supports a social engineering attack pattern.

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=actos+administrativos+de+los+presidentes+de+bolivia+pdf In PDF document text
    • http://wurodapu.threelapparel.com/uploads/1/3/0/7/130775612/mokijenizifuritu.pdfIn PDF document text
    • http://files.myindietrail.com/uploads/1/3/0/7/130775672/1d218b0c27.pdfIn PDF document text
    • http://files.bellacalore.com/uploads/1/3/0/8/130814279/mumubimogamu-fupedevumebat-ropetiwajo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/turbotax_for_business_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/buranadizizemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/what_is_belt_and_road_initiative.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/kivalaviviwateze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/magemawozowatiketabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5095/7974/files/meiosis_division.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5430/8245/files/arkham_knight_perfect_crime_locations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2751/0934/files/7676330352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/liregifamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/70377034112.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 8

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_off0000633a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633A 5276 bytes
SHA-256: 74102bbba69c5091365eafa965808062a2b9e48264f639a76eff8147dd90cad9
font_01_sfnt_off00007501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 10824 bytes
SHA-256: e63891156a5eea35b112be7e9aaea2d5df3bc1663240627a2ffd3f298e617d20
font_02_sfnt_off00009824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9824 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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