Malicious PDF — malware analysis report

Static analysis result for SHA-256 389bd1733cfc4576…

MALICIOUS

PDF

42.7 KB Created: 2020-08-13 23:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b9224cc3e22a2ce7d363b6d6cab2e32 SHA-1: a79a012f9a0bdf01d429f50db9d4bd84c792e723 SHA-256: 389bd1733cfc4576c6d4745f1f3e93161103e116882656844a267091616f7140
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=vernier+caliper+notes+pdf'. The document body itself is heavily obfuscated but contains this URL and other links, suggesting a lure to external content. The primary attack pattern is likely a phishing or scam attempt leveraging a link farm to distribute malicious content.

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=vernier+caliper+notes+pdf In PDF document text
    • http://files.cristinavannel.com/uploads/1/3/0/7/130739520/puwabusibagofizu.pdfIn PDF document text
    • http://zofulu.kwjclassiccargifts.com/uploads/1/3/1/3/131381489/savig_mefinu.pdfIn PDF document text
    • http://files.illuminatedobjects.com/uploads/1/3/2/6/132681452/6032176.pdfIn PDF document text
    • http://files.rejectrobotics.com/uploads/1/3/1/3/131398334/megezudemoledaja.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/1/0432/4111/1716/files/45573196725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9154/9590/files/organic_compound_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/pdf_to_word_macbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/cbse_maths_book_class_8_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/zajasesoxudir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6628/5462/files/sirejimatonavatov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/26910215058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/laneserividoverop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/73688633938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/arrival_of_the_birds_violin_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/posuseribeviwumuwegurew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/xatoxatidikazibagif.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_off000069c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C8 5116 bytes
SHA-256: b900f8d2169319c8ad6e1eb01ca37503abf85ee82175489d2ca5ca70a67061b7
font_01_sfnt_off00007b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B31 10160 bytes
SHA-256: 9fdaa1f003df43620d6bce2d670c1810150e5fe0521bff21f83ce851fd79afc9

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