Malicious PDF — malware analysis report

Static analysis result for SHA-256 357991ea588295d4…

MALICIOUS

PDF

48.8 KB Created: 2020-08-10 03:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c8ddcdec1d654ce504f4df8b00e1b0e SHA-1: b63ef116ead172ad887db973e116b5cd7130b67c SHA-256: 357991ea588295d4970a364513602877c77bda25c9b697222984e85785afe43e
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=viva+vaia+augusto+de+campos+pdf'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of multiple shopify.com links suggests an attempt to blend in with legitimate 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.cc/pify?keyword=viva+vaia+augusto+de+campos+pdf In PDF document text
    • http://files.immortalinquiry.com/uploads/1/3/0/8/130813516/pebupo_rokiposefuta_wemax_pasegepimonel.pdfIn PDF document text
    • http://kasade.downingcommunityadvisors.com/uploads/1/3/1/4/131454065/lurexej.pdfIn PDF document text
    • http://files.lanchunghsuan.net/uploads/1/3/0/7/130776484/5aca11b4ae.pdfIn PDF document text
    • http://files.zaaakart.com/uploads/1/3/1/4/131407102/wulobotoxiporud-minalamapere.pdfIn PDF document text
    • http://tovir.purplecarrotmarket.coop/uploads/1/3/0/8/130814124/forediloziruse.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/1/0437/7539/3946/files/kaleshwaram_project_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/30277679191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/what_dns_am_i_using.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/engineering_vibration_inman_4th_edition_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/likibejuserawumemivebuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8312/9251/files/zatanatekavutivepawizek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/present_simple_vs_present_continuous_exercises_macmillan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/risajolexokutudekonipuror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5960/0798/files/96320199136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/ninosuralutiper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/83669426084.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 3

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_off00007e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7D 5372 bytes
SHA-256: 112478513b369258a152f703bcc0b4fe5e2f5e8d50dee50ee7dcb680fcde3976
font_01_sfnt_off000090c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C9 10812 bytes
SHA-256: 46b092d5638007d44f35a9f673e936ae636f26e09d7fc81036610e13c2dc0886

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