Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca377e6c4fb686f…

MALICIOUS

PDF

62.8 KB Created: 2020-07-30 10:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2856c0b9d1be68f5f59777f0d3cdaf98 SHA-1: 3770a4d28e742ce9d413821d985657810887d16c SHA-256: dca377e6c4fb686ff1ff82a3acb3d968a30406fb85f70d38376471334e8b10df
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure for 'introduction to ecotourism pdf'. The presence of a malicious redirector suggests an attempt to lead the user to a compromised or malicious site, 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=introduction+to+ecotourism+pdf In PDF document text
    • http://files.empowerednation.net/uploads/1/3/1/8/131856757/gavuw-gipumegik.pdfIn PDF document text
    • http://files.waco-review.com/uploads/1/3/0/7/130776483/kemapanamobikipos.pdfIn PDF document text
    • http://files.biblebaptistpreschool.com/uploads/1/3/0/9/130969608/9ff35acb19e.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/1/0432/7433/8454/files/52025334363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/vaxakexunatonuzapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/misote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/kiligemogazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/72132905481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3420/6631/files/40930151730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/norevumuloxebamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6662/2101/files/17425216639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/jatilaroripuxujotef.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_off0000bab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB2 4880 bytes
SHA-256: a36fa5e5f19e832be9b3a07e6c0a94f1c1034c09a597423488e2d28cc250a927
font_01_sfnt_off0000cb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB29 10244 bytes
SHA-256: 7c8129f1dfca8ec7f1bb1f5aebbe4cbf345903e18d070acf12a48b82040766e9

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