Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a7258fb7691a76…

MALICIOUS

PDF

45.5 KB Created: 2020-08-13 23:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fbce10066c10652d76f96aac5ba01138 SHA-1: c66ff11e41c79668c24a271eed722795b184b6a8 SHA-256: 62a7258fb7691a76c592a2a69d5585237eb8ffe87afd6a92632b8b273e07df5b
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a redirector link to 'ttraff.com'. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or malware distribution. The ML classifier strongly supports the malicious nature of this PDF.

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.com/wb?keyword=learn%20german%20with%20short%20stories%20pdf In PDF document text
    • http://gogov.laniefrick.com/uploads/1/3/0/7/130776644/6a79b.pdfIn PDF document text
    • http://files.makinghairsmile.com/uploads/1/3/2/3/132302749/fesagufu_perudovazezorem.pdfIn PDF document text
    • http://nakosowo.theridgevillebakery.com/uploads/1/3/0/7/130775521/povemizejamebesenij.pdfIn PDF document text
    • http://files.holyfamilytopeka.com/uploads/1/3/0/7/130740429/51311a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/testi_e_accordi_canzoni_napoletane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/amish_tripathi_sita_warrior_of_mithila_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0177/9100/files/adobe_acrobat_reader_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2399/6840/files/vovavevofedaxuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/mapa_mundi_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8776/4387/files/91089435256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/jenukegasorefezuvef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4891/0491/files/62244675370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3612/8933/files/42442402971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2501/4684/files/tugejerijikunoguwagosafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/phase_1_and_phase_2_reactions_in_drug_metabolism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7530/3592/files/28962568995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/43973938796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0962/1665/files/20326159976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/suxesovusigezolegazasu.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CC 5244 bytes
SHA-256: 395c57df09fa90d9973b4335798eeff6773bb2b1c0424048d5b8d981bd6a849a
font_01_sfnt_off00007884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7884 9980 bytes
SHA-256: 3045264e56c830e87d3d9a1c3516b1d56649a050b9e19c95cd67b2b635ae4cdd
font_02_sfnt_off00009aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA5 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c