Malicious PDF — malware analysis report

Static analysis result for SHA-256 78b0e117b0f121bc…

MALICIOUS

PDF

38.4 KB Created: 2020-08-19 17:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b80acdb77929bb59669a34f8aef4121 SHA-1: 3fa88f5161ee36c82f9b6979d720206a362a6a3c SHA-256: 78b0e117b0f121bc5f38be9fd9cf2fa5bd4c6b82fb55b7dad301d6f128b78218
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'Seismic isolation devices report' and the malicious URL, suggesting a phishing or scam lure. The presence of a link farm and redirector indicates an attempt to drive traffic to malicious infrastructure, likely for further exploitation or credential harvesting.

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=seismic+isolation+devices+report In PDF document text
    • http://kigafa.inclusionandequityresources.com/uploads/1/3/1/4/131452821/516ee.pdfIn PDF document text
    • http://files.hypnosisgta.com/uploads/1/3/1/4/131437941/4604026.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/1/0434/0904/7708/files/mark_henry_s_theme_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0919/files/69733179200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/600516581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/66336963326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/2122190102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/pokobipelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2393/9237/files/nevetiwalifomavago.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 2

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_off00004c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8E 5168 bytes
SHA-256: 178754bc822ca95f2e1a292be826d82790f25f356aa913d37faa05f439777933
font_01_sfnt_off00005df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF7 9708 bytes
SHA-256: 11d5e976861b6675557798fe93120bae3d8783134d0de2079780b1fa29ab651a
font_02_sfnt_off00007f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F19 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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