Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6b05e3ca1aeb83…

MALICIOUS

PDF

43.2 KB Created: 2020-08-11 04:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ef1762876e06eefe6accc421f8792bb SHA-1: df34cff9d433e2d6b6aa70b554edb8c3649c2cf3 SHA-256: cd6b05e3ca1aeb83cc38c5c9faf20fea287a3e4bf156da2f41de1d6d2bdcbe41
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.com. The document body, though heavily obfuscated, contains the text 'Behaviorismo metodol uevo pdf' and the malicious URL, suggesting a lure to a malicious site. The presence of numerous shopify.com links appears to be an attempt to blend in with benign content.

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=behaviorismo+metodol%25C3%25B3gico+pdf In PDF document text
    • http://files.megremedialmassage.com/uploads/1/3/1/8/131856353/5256246.pdfIn PDF document text
    • http://mujesexu.courtneymillerpilates.com/uploads/1/3/2/3/132303382/puxomovebokarurexaki.pdfIn PDF document text
    • http://files.kellybalmaceda.com/uploads/1/3/1/3/131380616/4070708.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/1/0430/7235/6509/files/aprende_a_leer_musica_peter_nickol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9448/0798/files/69304205419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/kexapofitogevunejom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/english_for_business_studies_cambridge_third_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/bijolodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6442/5622/files/kajad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/20366156870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/goxurarilesavalamaraber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2126/0184/files/buxenuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/21837118887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1297022614.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
🗂 Part of campaign: kellybalmaceda.com 3 samples

Related samples 4

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_off000065bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BD 5812 bytes
SHA-256: ae0270081132fe1e44a516ce7fa10ae9ca53c5f7418646a7b6e096f701dffb8a
font_01_sfnt_off00007930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7930 11568 bytes
SHA-256: 7d95be45638335f3428ae6b70b0f16d741e516ec27d3c35926fa89eef45fa56d

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