Malicious PDF — malware analysis report

Static analysis result for SHA-256 19fb1504568e1672…

MALICIOUS

PDF

50.5 KB Created: 2020-08-05 23:27:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3122838f63d76af287a1c2a9ab03274 SHA-1: 0f1caf12a2adc1e41474768f8ec9bd6fa4212728 SHA-256: 19fb1504568e1672786040f62b14ccca077997ec66d502a4c22364b00b29fedb
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The primary link, 'https://ttraff.ru/pify?keyword=java+programming+language+book+pdf+download', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the same lure and URL, reinforcing the malicious intent. The file's structure and link farm suggest a phishing or malware distribution attempt.

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.ru/pify?keyword=java+programming+language+book+pdf+download In PDF document text
    • http://files.careersatadviceone.com/uploads/1/3/1/6/131637136/a6bc63bde.pdfIn PDF document text
    • http://files.lynniashanley.com/uploads/1/3/1/0/131070098/1454330.pdfIn PDF document text
    • http://files.developingamerica.org/uploads/1/3/0/8/130874329/9849548.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/1/0429/8126/1466/files/vuxomufagatafuruseroge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/12426063586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/28773936627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/27132915943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/jibekasediruwojim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/budokodidezikup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/12920899113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/zugekizusata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/peavey_bandit_112_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/44562529978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3744/8609/files/botuvebimipuradiwadixuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5536/6822/files/sonic_rpg_ep_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/13912978392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/applications_of_right_triangle_trigonometry_worksheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8523 5528 bytes
SHA-256: 5b8c64ed2e30236493344df977cbdd4499b9b849c5c525127d74f316549a1c66
font_01_sfnt_off000097f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F8 10316 bytes
SHA-256: fdd1663cbc5b84c133a2a1ca361bedaf9a553e22a6ad67e788a882a00d9fbe9a

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