Malicious PDF — malware analysis report

Static analysis result for SHA-256 0345c56b48a2fce6…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 09:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81e9e19285199ee66e464676d562ceac SHA-1: 065ea61906f35a668774ffcb9cc0379cd29d5dd0 SHA-256: 0345c56b48a2fce6ed99266b5a1c9d1f62b0e19595850462b1ac8a485b56e845
202 Risk Score

Malware Insights

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

The PDF contains numerous links to a redirector service, identified as a malicious SEO link farm. The document body, though heavily obfuscated, contains text related to file conversion and a URL that points to the same malicious redirector. This suggests a phishing or scam attempt to trick users into downloading potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=convert%20pdf%20to%20xps%20document%20c# In PDF document text
    • http://files.turborenovations.com/uploads/1/3/1/4/131453588/2038804.pdfIn PDF document text
    • http://files.sharonmaylinn.com/uploads/1/3/0/7/130738752/vibomugavor.pdfIn PDF document text
    • http://jafoduzol.glynisfullwood.com/uploads/1/3/1/4/131437379/jabof.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/1/0435/4310/1591/files/kajawet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7051/1521/files/spanish_to_english_basic_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7429/files/as_3500_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/92690874169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1872/2216/files/3126_cat_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/pexefelaxav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/kibudezanuxufijagewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1401/9496/files/nipalososavevijojol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/tovagozizaxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/25191546327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/25021026801.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 4

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_off00006d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1B 5092 bytes
SHA-256: 2a0b7c49a234bf1149a6933b3e7cb1d345fed3388c1d6e610d1355636a37bb9a
font_01_sfnt_off00007e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E68 10080 bytes
SHA-256: 14bf32f5d5266ec26355abf50c1f69ce663ef186883d9001cfd46f14c91ebe98

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