Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff40f7ff8c7e102…

MALICIOUS

PDF

38.7 KB Created: 2020-08-15 06:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47c75ec0075bd800c79c61fbe7900200 SHA-1: 327a94a826740d39314800a159abbb5be1b74624 SHA-256: 7ff40f7ff8c7e102e00c12caa645c292139256b5f31706e68c4547ddaadd69f6
194 Risk Score

Malware Insights

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

The PDF contains embedded links and text that direct users to a malicious redirector URL, disguised as a ringtone download. This is a common tactic for phishing or distributing further malware. The ML classifier strongly indicated maliciousness, and the presence of multiple external links, including one to a known malicious redirector, supports this assessment.

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=karni+padi+badmashi+ringtone In PDF document text
    • http://files.swcsdcareertech.com/uploads/1/3/2/6/132681392/1678847.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/1/0430/2117/2897/files/91969576395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9492/3677/files/convert_to_word_online_with_ocr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/70548591334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/70320455552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/18668087478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/1985609073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/gixunerup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8399/6063/files/magesamemifuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/lefododo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/zuwud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8872/2587/files/aditivos_alimentares.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 2

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_off00004e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E58 5448 bytes
SHA-256: e19d3889268bbeeb099dcbec2ed374d160dd170281fd2495c3ee61ec08f9edc4
font_01_sfnt_off000060ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AD 14792 bytes
SHA-256: 79899f0883fd7750eb5b8b31fb7d8dd51f94b7b3a7ef094771b0b6da2e34335d

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