Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24023307ec69b9c…

MALICIOUS

PDF

36.7 KB Created: 2020-08-04 22:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac7b6d47d5fac4d04cf7502d30945cb2 SHA-1: 6157455a9b589c288927ae8783498cb427418665 SHA-256: a24023307ec69b9c73898f3900cbf94f4cf67b4f71c2a2eeebd2dc1a74cab198
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, characteristic of a link farm. One of these links, https://ttraff.ru/pify?keyword=angulos+de+elevacion+y+depresion+en+situaciones+reales+pdf, is flagged as a known malicious redirector. The document body itself is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it's not intended for human consumption but rather as a vehicle for distributing malicious links.

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=angulos+de+elevacion+y+depresion+en+situaciones+reales+pdf In PDF document text
    • http://files.divorcecoachingandconsulting.com/uploads/1/3/0/8/130874518/bejam-soselovorifat-tekumubobup-powidonuvewadar.pdfIn PDF document text
    • http://files.tidygardensfencing.com/uploads/1/3/0/7/130774990/1813824.pdfIn PDF document text
    • http://files.highsandhellos.com/uploads/1/3/2/7/132740293/voxesolexetug.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/1/0433/7713/1683/files/naruto_shippuden_episode_327_english_dubbed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7230/6852/files/47096965634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3584/3994/files/subupotelesigoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/wicked_game_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/tuzajatisifuloresadipijix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/tusogewopoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/tidosenuzazijunajikuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1961/5901/files/dvd_shrink_cnet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/87580209799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/nagogutuworelorosabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5827/3185/files/67193908948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/effects_of_air_pollution_file.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_off00004f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F78 5472 bytes
SHA-256: c09652642748ca9aa4cbfb805f310f692a97d08e183cb162c06609b12b97c7aa
font_01_sfnt_off0000623c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623C 10956 bytes
SHA-256: 783dc17cac832e97d25e25079604fd22d80bca97817cb4421c9eb39cc1e3e2a4

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