Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fd70557bf814a0…

MALICIOUS

PDF

46.9 KB Created: 2020-08-11 13:31:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 981e238636d1323ba9cf880d3c41902e SHA-1: c4839d5d70e70a0f1a27a784b04279d7c4598635 SHA-256: 22fd70557bf814a0bed07385d4ad055e6aca548ee0ae770502975289c77bd2e4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to 'https://ttraff.cc/wb?keyword=ulisses%20workout%20pdf'. This indicates a phishing or scam attempt, likely to lead the user to malicious content or a further phishing page. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/wb?keyword=ulisses%20workout%20pdf In PDF document text
    • http://files.northshorejewish.org/uploads/1/3/1/4/131453393/85393d098.pdfIn PDF document text
    • http://files.kaholeung.co.uk/uploads/1/3/0/8/130814980/kazivolul.pdfIn PDF document text
    • http://files.challengethewind.org/uploads/1/3/2/6/132695730/4477159.pdfIn PDF document text
    • http://files.isobelchurch.com/uploads/1/3/2/3/132302894/2558091.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/1/0434/0911/3242/files/saforikovij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/zamomitaguludim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/types_of_building_automation_systems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/77164139277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/gidogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1783/files/mike_fiers_fangraphs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/wotimuwen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4404/3943/files/zekubazikopax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/caracteristicas_del_aprendizaje_colaborativo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3871/6583/files/biocontrol_agents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/29634245182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/bivenakufor.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_off00006d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D34 4748 bytes
SHA-256: d3e56dbf6293d0c978635819e992506520a17adf1ff2b2d3ef926eb96677f0b2
font_01_sfnt_off00007d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D89 10360 bytes
SHA-256: 597ab4d2d5e92841563adcf988c2750e299bcf3235a14b44c31d861f8fff6f92
font_02_sfnt_off0000a0ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0EE 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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