Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc499ba3f4db06ea…

MALICIOUS

PDF

46.2 KB Created: 2020-07-29 20:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4abe46e00d061466ba2db42dec18e4b4 SHA-1: a9baf080c587837f7159a2f4f426f25aabcbf0d4 SHA-256: dc499ba3f4db06ea2a20e0dac4cf5b4639f6bf104d1b3ed97bbe27b3b98d641e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'ttraff.com'. Another critical heuristic identified a PDF link farm, suggesting a tactic to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains text related to 'worksheets for grade 3 pdf', indicating a lure to disguise the malicious intent. No scripts were extracted, but the primary attack pattern involves redirecting users to potentially harmful websites.

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/pify?keyword=aspekto+ng+pandiwa+worksheets+for+grade+3+pdf In PDF document text
    • http://files.gisdcte.com/uploads/1/3/2/6/132681880/739f8.pdfIn PDF document text
    • http://files.jcgreflexology.com/uploads/1/3/2/6/132680994/jusabijifon_rokumi_bobopikegeg_defapaxibefox.pdfIn PDF document text
    • http://files.craniosacralnashville.com/uploads/1/3/0/9/130969334/wegigiv_gotuz_pemulisopura.pdfIn PDF document text
    • http://files.empowerunit.org/uploads/1/3/1/0/131070485/gabozanowijud.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/1/0429/7257/7946/files/zalekoruvide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/wowebibexufanadofugokibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/sexoxureforajozejisiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/puradefovotut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/70112193859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7276/6630/files/45971539007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/lenowovexubolakano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4386/3198/files/46395621652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/vuturugokizakugibugebomim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4827/2023/files/6490090411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0133/0340/files/54578132864.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 6

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_off00007690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7690 5368 bytes
SHA-256: b9ed4f322c41b7ffe4d9bac20f83616d9cbb0d6c18938cdb2b239df8215dc6df
font_01_sfnt_off000088dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DD 10088 bytes
SHA-256: 8510d025bb7be9e6b9209b45523909a0e2d41678e3e771733fad9bf547f6bc35

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