Malicious PDF — malware analysis report

Static analysis result for SHA-256 c310b8b6b8362653…

MALICIOUS

PDF

59.5 KB Created: 2020-08-19 16:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1be16b460640ab79b5d738fba693317 SHA-1: bebb9f5aea8ef69e1319c99d079a5676316eefd9 SHA-256: c310b8b6b8362653523cac39e480fb8481cf73eacc930dadffd64481ce92965e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, all pointing towards a single redirector URL. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the primary redirector URL and several benign-looking Shopify URLs, likely used to obscure the malicious intent. The primary malicious URL is https://ttraff.ru/pify?keyword=cardiomyopathie+hypertrophique+forme+apicale, which is used in conjunction with a lure related to a medical condition.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=cardiomyopathie+hypertrophique+forme+apicale In PDF document text
    • http://files.konop.net/uploads/1/3/1/4/131438460/9a213738.pdfIn PDF document text
    • http://files.jenateer.org/uploads/1/3/1/0/131070356/3927505.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/1/0428/9177/2063/files/pajiwivogizifosozexero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/lajojudevelenimumunuvuteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/78177108513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/saxanujulaviwelapuwonisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/66397641118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/negarisejolulim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/kevumolijedipuzazugazame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/natuvoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/mazatrol_programming_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45287622464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/pibetunaguganoganitejimer.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 4

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_off00009d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9C 5244 bytes
SHA-256: a82fae16381e6e9a02d1628f2489a2cefac4ea64cfa1e2f9bb06188806d84245
font_01_sfnt_off0000af8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF8B 10304 bytes
SHA-256: 992feddbf16f4e1b31bcab87f49f520d34a813a63bfd90544391323f5299c9e2
font_02_sfnt_off0000d2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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