Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cd3137ce7aeca2…

MALICIOUS

PDF

41.3 KB Created: 2020-08-18 17:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4febfd7d09fe06dc83bb297212167a4f SHA-1: 4546a1a08a590e1dbff8f5b5989cba5523393d1c SHA-256: 35cd3137ce7aeca25533301068a29254752202a436f39b85454d48dc6a4e350d
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 of these links, 'https://ttraff.cc/pify?keyword=english+abc+worksheets', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'English abc worksheets', suggesting a lure to entice users to click the malicious link. The PDF structure and link farm indicate a social engineering attack aimed at redirecting users to malicious 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=english+abc+worksheets In PDF document text
    • http://files.doorway.org/uploads/1/3/1/4/131407155/ruxatire.pdfIn PDF document text
    • http://files.hometoaz.com/uploads/1/3/0/7/130776267/remigabixujalubofif.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/1/0433/3276/3801/files/razofavijir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/vefunepizaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2904/4119/files/kojupax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1261/8402/files/char-_broil_performance_seriestm_t36g5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/tepavomuweloriwubeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/16935952428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2345/6661/files/62177144137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3029/9292/files/45746050268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5135/0166/files/loxojegojofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/horde_questing_guide_bfa.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_off00006296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6296 5316 bytes
SHA-256: f6742b050ca1c7ebfd9e3e733a557fb5cdfaa1d9a81d103cd99f867c7099c48b
font_01_sfnt_off000074b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 10424 bytes
SHA-256: 96ddef0ab439649ce6b0cd6dc384337fce1f2d59b3297b076e23f8dae53d6d7c

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