Malicious PDF — malware analysis report

Static analysis result for SHA-256 708b7c117f0bf2e6…

MALICIOUS

PDF

40.9 KB Created: 2020-08-06 06:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a59f47b91d1853b736c3a99213f597a SHA-1: aefc00e0d30fa8d705d11053ef346fbfd1acb52a SHA-256: 708b7c117f0bf2e60d646bf45cb6a5cae253c8d8ab915fdb81b776c5d54c0034
194 Risk Score

Malware Insights

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

The PDF contains multiple links to an SEO redirector, specifically `https://ttraff.com/pify?keyword=auditor%25C3%25ADa+de+sistemas+pdf`, which is flagged as malicious. The document body and embedded links suggest a phishing lure, likely attempting to trick users into downloading further malware or visiting malicious sites under the guise of a system audit document. 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.com/pify?keyword=auditor%25C3%25ADa+de+sistemas+pdf In PDF document text
    • http://files.leadrighttoday.com/uploads/1/3/1/4/131483148/cdff1187d87d1.pdfIn PDF document text
    • http://files.morethanatourist.net/uploads/1/3/0/7/130738752/mesawepazurab_sebibaxav_luwogumatake_lazowalogonelun.pdfIn PDF document text
    • http://files.ironfistboxing.org/uploads/1/3/0/7/130776245/rosevajegizufunik.pdfIn PDF document text
    • http://files.carlosdepaula.co.uk/uploads/1/3/0/7/130740178/tibetemekap.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/1/0438/0744/1053/files/lipuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1044/0859/files/folerulutisimudoris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/47659690711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/15494720211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/32285843102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/finonazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/49713799950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/11610645804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0898/3203/files/sixegafijorevobovudire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/fowuwenitozoxulegezexef.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 7

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_off000060dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DD 5200 bytes
SHA-256: e237669a190fa12089b93b8873ed1e7fbce56e71ba9a4553d34fb2338b424bb5
font_01_sfnt_off0000727d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727D 10604 bytes
SHA-256: 979b6da4b5e35fc8ab31e7e3ab11e8f241e0f6b96bc14683487005c670c93867

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