Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c58114492deea5…

MALICIOUS

PDF

47.1 KB Created: 2020-08-09 08:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8dcb768512736ad1b0e0c776cec66d2 SHA-1: ef783c264c7cd328521a31e66139899036322cb0 SHA-256: e3c58114492deea5cf93c413c6f64618d4839531322f9b6437de6a104cd9cee1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to known malicious redirector infrastructure at `ttraff.cc`. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect users to malicious sites under the guise of providing PDF documents.

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=livro+adestramento+de+caes+para+leigos+pdf In PDF document text
    • http://files.fnaq.org/uploads/1/3/0/9/130969944/nivubuluro.pdfIn PDF document text
    • http://files.rememberingreiki.com/uploads/1/3/2/7/132710704/676e09b.pdfIn PDF document text
    • http://files.glamonthelam.com/uploads/1/3/1/4/131437728/82e634435.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/1/0430/7219/2669/files/kindle_fire_hdx_8._9_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3064/2837/files/4931183801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/kajoxexakixemalunubafapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7616/5536/files/36919815676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/litafirubotezalokebod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/46766937156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/automated_process_control_system_in_pharmacy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4952854333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5849/5639/files/80077980059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/watch_avengers_online_megavideo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/kiwawoxulomewomakefekib.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 5476 bytes
SHA-256: 5299e335fc13915ac24a0b413a4da8cd8f348659bc3674d6864729e6f48c6f33
font_01_sfnt_off00007308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7308 12112 bytes
SHA-256: e4cc51ea6523de48a67354bfe95b0d9d1413699a3b75cd825810c122230085e3
font_02_sfnt_off00009873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9873 16164 bytes
SHA-256: 3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994

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