Malicious PDF — malware analysis report

Static analysis result for SHA-256 581fae2e57cd1af2…

MALICIOUS

PDF

41.1 KB Created: 2020-08-09 04:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd7c7d8e80a80a08e65c429ffcfb466d SHA-1: 30e33c5b87d18372d2e9c6adaa84b1f67bc4646a SHA-256: 581fae2e57cd1af2d01d4ea20cbe3c29b3ec7b59bccfbf3c80cd4e69d0a66853
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=calendario+2020+escolar+2020+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the malicious redirector is a strong indicator of a phishing or malware delivery attempt.

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/pify?keyword=calendario+2020+escolar+2020+pdf In PDF document text
    • http://files.getnoticedartdesigns.com/uploads/1/3/0/7/130775813/4512414.pdfIn PDF document text
    • http://sirisije.disneylandparisforgrownups.com/uploads/1/3/0/7/130775085/2541976.pdfIn PDF document text
    • http://files.cubcountry.org/uploads/1/3/1/4/131438392/7344747.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/1/0431/7960/6176/files/laxexif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/bhagavad_gita_chapter_8_slokas_in_sanskrit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/marketing_strategy_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/15_commitments_of_conscious_leadership.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/tuvalatoludavutetodubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4852/6246/files/96363751355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/31628599834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wofizafadunemewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/assembler_tutorial_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/zomugefavobekubexadefub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/tokyo_subway_map_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/wanodofomunob.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 5

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_off00005e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9B 5328 bytes
SHA-256: 984acb7ac20080e82bba34d30842a3378ffe23a329ac0952bebad900f4cca484
font_01_sfnt_off000070c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C4 11424 bytes
SHA-256: 41107d97c1d72313863ea16859774dbad009d16c6b5fe43e1f97fffe530c246d

Open this report in the interactive analyzer, or submit your own file for analysis.