Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ffa04be5a43e77…

MALICIOUS

PDF

103.7 KB Created: 2020-08-08 22:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b691e252ac0d5ae6046c5a0cceabf2c SHA-1: e25b08abe9233c4611775adc9e1a5bc771888410 SHA-256: e1ffa04be5a43e7799b4a7eba3a2883f16b9a76ab4f5150b2af16a82674bf399
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector service. One such link, 'https://ttraff.cc/pify?keyword=bach+toccata+e+fuga+pdf', is explicitly flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to trick the user into clicking the link, likely leading to a further malicious download or exploit.

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=bach+toccata+e+fuga+pdf In PDF document text
    • http://files.rambunction.net/uploads/1/3/1/4/131406947/e372f9096693b9f.pdfIn PDF document text
    • http://files.morganephotos.com/uploads/1/3/1/3/131378932/d85a079fc372.pdfIn PDF document text
    • http://dozigarun.belcanto.org/uploads/1/3/2/6/132695615/retavetilisizaw.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/1/0438/3657/1808/files/rakaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/59518537122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/zedorogavojaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5240/0789/files/materi_kuliah_akuntansi_sektor_publik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4038/2882/files/55206081187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8159/6066/files/luwopanejirigujavumagifej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9243/4343/files/pobemonodavaketolusaferi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/tarrant_county_sample_ballot_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/17238909339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/50996409686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/28240047755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/xabuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/biography_of_mahatma_gandhi_in_urdu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13844 5160 bytes
SHA-256: 44252c6c9c9d1969d0007a2d2a3cb3994ae694596291f12524c61a5e57a5022e
font_01_sfnt_off000149dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149DD 16820 bytes
SHA-256: e7a485958ac3e5aa5b35f8bd916fe9028a77a031ae0b0b7b42f6c13fe6650fd1
font_02_sfnt_off00017c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C58 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832