Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2532e6ff9f13b43…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 12:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0410641f4937f3b3e16cc2ad687c3fd4 SHA-1: 49cca55d8e96bd4378f8dfd98006267dd220194b SHA-256: b2532e6ff9f13b435b52d999bc0b0483c53c3c7a8da145de2ffa464e46f0f13a
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'Ashrae psychrometric chart pdf'. The presence of a link farm and a visual download button further supports a malicious intent to redirect users to potentially harmful content. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ashrae+psychrometric+chart+pdf In PDF document text
    • http://files.itselementarymydear.com/uploads/1/3/1/3/131379183/kigot_makonulunurajo_feputikav.pdfIn PDF document text
    • http://files.annmaidscleaning.com/uploads/1/3/1/4/131453384/ac0dc55d3.pdfIn PDF document text
    • http://files.stnicholasbuccleuch.org.uk/uploads/1/3/1/8/131871994/5008149.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/1/0433/5117/9423/files/mentor_graphics_calibre_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27039997465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/insertional_achilles_tendinopathy_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/91423178604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2321/6290/files/asterix_und_kleopatra_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6406/5188/files/68258196255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/zigolivemokabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0106/0262/files/control_de_crecimiento_microbiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/3415149353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/wunuwiwafufefag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/21221975277.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 2

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_off00008213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8213 5456 bytes
SHA-256: 40552240329d2468553302740fe78de3107ed642646026cf4383e734fecec6c4
font_01_sfnt_off0000947d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947D 10960 bytes
SHA-256: 0776b44bf9a3460c21ff4a9fbc47afd4bed3ca85c1837a89fb34a3f2d8a7c99e

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