Malicious PDF — malware analysis report

Static analysis result for SHA-256 78dd8becb32858a6…

MALICIOUS

PDF

68.7 KB Created: 2020-08-15 13:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 04bf43d41dee44450cefed5c1425fa10 SHA-1: 5d0d866ba5ea7ef052d7840d277665d8d753f0c7 SHA-256: 78dd8becb32858a62686835ec914bffd35021cf7e0826492435cbb05cfc2063a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The primary malicious URL, https://ttraff.com/wb?keyword=chicken%20egg%20production%20process%20pdf, is identified as a redirector. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to trick users into clicking it for a purported 'chicken egg production process pdf'. The ML classifier strongly supports the malicious verdict.

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=chicken%20egg%20production%20process%20pdf In PDF document text
    • http://files.mikepaganrealty.com/uploads/1/3/1/4/131438474/wuderafe.pdfIn PDF document text
    • http://bexoni.nckpackaging.com/uploads/1/3/0/9/130969762/dikigu.pdfIn PDF document text
    • http://files.mikkiscreations.shop/uploads/1/3/0/7/130738548/zafirazetexenenigeno.pdfIn PDF document text
    • http://files.longhirstopengardens.org/uploads/1/3/1/6/131637240/d4595bfd3.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/1/0428/7266/8319/files/serenade_for_strings_tchaikovsky.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3936/2970/files/html_to_converter_online_free_without_email.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3985/7563/files/blue_cross_blue_shield_mn_enrollment_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/rutolevirakitikaminiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/kotuzozogixugixitixujamut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3445/0840/files/xulisonet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/pigemefifuvibu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC302 5144 bytes
SHA-256: 1b8783779414ae98c80514f4234c15c55135f86c61b1c716306e9338c9b92df2
font_01_sfnt_off0000d475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD475 10404 bytes
SHA-256: d8531c6b3eef91ba45706bc698d7af8f3e35a5322e0660d1a56ab344850edd34
font_02_sfnt_off0000f80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80A 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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