Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c50a85a825340f…

MALICIOUS

PDF

43.8 KB Created: 2020-08-09 22:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a072d4ba977987e1663c9c917985693 SHA-1: 7572189d76bbc87e8e213bcef1b45854fff2052c SHA-256: f3c50a85a825340fff3fc5603882409e73f89c949257dc8a95dea26e4b9a3194
202 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Atoms and molecules class 9 ncert solutions pdf' and embeds a mass of external links. One of these links, 'https://ttraff.com/pify?keyword=atoms+and+molecules+class+9+ncert+solutions+pdf', is identified as a malicious redirector. The document body also contains numerous Shopify URLs, likely part of a link farm designed to improve SEO for malicious content. The presence of a fake invoice lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=atoms+and+molecules+class+9+ncert+solutions+pdf In PDF document text
    • http://files.hollymsmithphotography.com/uploads/1/3/0/7/130739715/dac13ce.pdfIn PDF document text
    • http://files.frechettefarms.com/uploads/1/3/0/9/130969403/xukukewefarizarek.pdfIn PDF document text
    • http://files.ineslampreia.com/uploads/1/3/2/7/132712326/0a2a2aa.pdfIn PDF document text
    • http://files.millerunitedmethodistchurch.com/uploads/1/3/1/0/131070030/5370156.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/1/0433/4141/4555/files/vozakimajodoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/dopufobuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/97397107174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7402/2550/files/eddie_torres_volume_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/integral_calculus_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/53090989756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/36076210930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/1975194838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9131/9201/files/cfb_boiler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/bizebagezavude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/28298891164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/sufanugafaluvade.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFD 5448 bytes
SHA-256: e201a12b68ab10a9255853b6d4c9e8e96b88994d4aba7dec86036be8648aeec3
font_01_sfnt_off00007f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F67 10180 bytes
SHA-256: faf5483f68347be0267ef43165e56432252456934d7115d9099215231539a72d

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