Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1eac509a8d53216…

MALICIOUS

PDF

44.5 KB Created: 2020-08-04 11:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5ae32ec6a5560755471b922ebdd851b SHA-1: f2010c21ed84a40d05b1457f4326771d50322889 SHA-256: c1eac509a8d532166d4a53fa9923119eed383ed4fd40c8377f96e2afea2bd9bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final malicious destination. The document body, though partially corrupted, contains text related to biology topics and the malicious URL, indicating a lure to disguise the malicious intent. The presence of multiple unknown URLs further supports the malicious nature of the document.

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=difference+between+mitosis+and+meiosis+table+pdf In PDF document text
    • http://files.freshmediatt.com/uploads/1/3/1/4/131437599/wozewuzawuvev.pdfIn PDF document text
    • http://files.forksandblooms.com/uploads/1/3/0/8/130815009/kuguwuvowawez.pdfIn PDF document text
    • http://files.miltonwildcatfootball.com/uploads/1/3/1/6/131606165/wajas.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/1/0431/2986/4343/files/prentice_hall_chemistry_textbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/git_conflict_resolution_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66264102559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/lurofakun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/gapojirakuvovinog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/zipubikepasojozivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43692268827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5284/3676/files/basaxarikes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/catamaran_rx_pa_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/vuvudiwuxagejesav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0922/0501/files/nijovisaxonelexiwam.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
🗂 Part of campaign: freshmediatt.com 3 samples

Related samples 6

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_off00006c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C61 5532 bytes
SHA-256: 98b629e6e77cfbcaab57dc97f1b87ff2d5a8439f0b94344b9c913982bc7fb2e4
font_01_sfnt_off00007f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2B 11216 bytes
SHA-256: 9fbe2051387e4f4d390098cce4904a106ca55dc97db3dce7f58ac516c511d2eb

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