Malicious PDF — malware analysis report

Static analysis result for SHA-256 045a6d47d1328687…

MALICIOUS

PDF

40.7 KB Created: 2020-08-17 18:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fbcc5f2d125be709be685b74e65b3d8 SHA-1: fd3f78c867a80c7a770b1c51b1caf5347fcba8f2 SHA-256: 045a6d47d132868776968e6f2cc82ee81cb6571c633a993b0b5ed0e1cbd7180d
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary redirector link pointing to a known malicious domain. The document body, though heavily obfuscated, contains text suggesting educational content, likely a lure to encourage clicks. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or scam attempt.

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=ip+word+family+worksheets+for+kindergarten In PDF document text
    • http://files.andreareynolds.net/uploads/1/3/1/4/131437037/c883972241920.pdfIn PDF document text
    • http://files.torrancerosefloat.org/uploads/1/3/1/1/131164250/fuwalinonasixiw.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/1/0428/6893/2767/files/xawitolukesutetoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/9th_class_english_textbook_ssc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/72584301734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fedixudarat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8522/6393/files/temaruvunezigenilirozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/60228994349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/36386712087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/17861202069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1379/8050/files/30844154497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7802/files/adverb_of_degree.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 3

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_off00006094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6094 5648 bytes
SHA-256: 04884e3186eb0730948f584a86d309ef77e2e0ff3faae84fc134d8634948bd7a
font_01_sfnt_off000073c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 10080 bytes
SHA-256: 649370fa721346b1a1106e8fa622c5f5f1c6bf6cd00cbeedad7a13929d8f6914

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