Malicious PDF — malware analysis report

Static analysis result for SHA-256 566b54174a9d468a…

MALICIOUS

PDF

46.2 KB Created: 2020-08-20 02:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d359aa33c2ae4b8d2a8a1d8d77f0fbe5 SHA-1: fb4d598356fce2cb9285d2f64f5ea0c2d60444dc SHA-256: 566b54174a9d468a21f4b44779a2917efd99b15ef18a2ff86fb50ca42ec9dd98
234 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily corrupted, appears to be a lure for 'Descendentes 3 filme completo em portugu". The presence of a password-protected archive lure suggests the PDF is intended to trick the user into downloading and decrypting a subsequent malicious payload. The primary IOC is the malicious redirector URL.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=descendentes+3+filme+completo+em+portugu%25C3%25AAs In PDF document text
    • http://lugoxoku.strictlybraids.com/uploads/1/3/0/7/130739602/9311515.pdfIn PDF document text
    • http://files.stitchconnect.co/uploads/1/3/0/7/130740412/3f715aa22.pdfIn PDF document text
    • http://maxom.stand2serve.org/uploads/1/3/1/4/131407067/8072999.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/1/0435/9212/2527/files/sutorepupepazikesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/76340718077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/kosakuxumugofone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/ley_general_de_cambio_climatico_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/84420539119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/xesegodezazuguxebowirubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9408/0674/files/fumamavanovedoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/the_foundations_of_empirical_knowledge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/jax_runes_guide_season_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/ramezidig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6788/1125/files/xupogakasimus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/34693044865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4046/3255/files/business_letter_sample.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F86 5460 bytes
SHA-256: 89efd8b156b5c9196675bd107d6da8adbfe760fd3e63d45021de18e6fbd5de50
font_01_sfnt_off000061bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BD 11268 bytes
SHA-256: a31e3be6eb5563f32366cebb612dcece99dc4fa0f8772840e89127600da83456
font_02_sfnt_off000085e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E7 16096 bytes
SHA-256: 2fbe0f2b4fe48ca7edce592075601a606a9abf5b16e9efbaf605fed263109796
font_03_sfnt_off00009aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAC 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378