Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfeb378f36c6e0a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-19 01:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 259b0f25a8784330faacfd1a882d892b SHA-1: 1b93b3844e7000a66380ada254d178ca0a0d7e52 SHA-256: 7dfeb378f36c6e0afb8f2ab704d2d916a9b92bea3f2f3ce5b8f4ac332ae19405
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector, which is likely intended to lead the user to a phishing site or download a secondary payload. The document body text, though obfuscated, contains the phrase 'Destination b2 unit 3 answer key' and the malicious redirector URL, indicating a lure for malicious content. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=destination+b2+unit+3+answer+key In PDF document text
    • http://valena.sianyeshe.com/uploads/1/3/2/6/132682879/pibujinosa_vixilinudinut_visik_vaxezapukalenil.pdfIn PDF document text
    • http://files.philippecorriveau.com/uploads/1/3/1/4/131406507/2612576.pdfIn PDF document text
    • http://zifevuzab.harmonyremoterepair.com/uploads/1/3/1/3/131384021/nuvudusox.pdfIn PDF document text
    • http://files.projectindianbeauty.com/uploads/1/3/0/7/130776757/8342940.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/1/0431/5188/4445/files/87985489695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/broken_hearted_lyrics_beyonce.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/kekanonakixaputal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2395/6125/files/81977874829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/mezolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1638/files/dowokutubuxixebuvemuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1662/6082/files/96316659284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/27492177614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/behringer_xr18_edit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/camilla_lackberg_knjige.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_off00005ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE6 5340 bytes
SHA-256: 71ded1383823a7ad0aac7d8f84033de4da10067a0deed9ad6fddaf2187f9f0d8
font_01_sfnt_off0000713a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 10668 bytes
SHA-256: 039ea5e41299e7dadeced823d9c9085fb3313f05c19303373d6117be25e7f48e

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