Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df9eafed9c70164…

MALICIOUS

PDF

53.9 KB Created: 2020-08-09 05:07:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98d41c7f755be25da99ed947a1d43ec9 SHA-1: c3af397d46a487973c4bffe99dfe50fae9bbb34c SHA-256: 4df9eafed9c70164f5542dee2c95fa87cca51aaa98d44cb491d53422d7c87583
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'argumentative speech examples pdf' and includes the malicious URL. This suggests the document is designed to trick users into clicking the link, likely leading to further malicious content or downloads.

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=argumentative+speech+examples+pdf In PDF document text
    • http://files.lusialatuconsulting.com/uploads/1/3/1/1/131164009/7337104.pdfIn PDF document text
    • http://files.centralfloridarowing.com/uploads/1/3/1/4/131437655/debodob-rupuvagarapi.pdfIn PDF document text
    • http://files.axevmc.com/uploads/1/3/0/9/130969525/tafevogapowaz.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/1/0428/5366/2883/files/xezepajogoruxemumuviwav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/2004_jetta_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/jolafifivaxazila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/31626090892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/87511010849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/23706946139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/tebagaxosiwesujitepipafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5795/files/bemaretakomivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/kumaxigix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/goporapiberefupawaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/47969669342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/59141358776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6556/files/11101492344.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_off0000933a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933A 5684 bytes
SHA-256: 596a3fa20f1ec13d8c852c05e05207c0d7a0436e2519c89629aed2df83d0f7bd
font_01_sfnt_off0000a676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA676 10640 bytes
SHA-256: 2df2fceef37f8a034fbbd4b8dd47bf3ee53ee2960786122fe829222adbcae461

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