Malicious PDF — malware analysis report

Static analysis result for SHA-256 851c783f7f28dc64…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 07:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 838a0ce976d3ddeee4c84b938a4294bd SHA-1: 00593a5925ccbfa02cf0875d9647e7b8e82248b3 SHA-256: 851c783f7f28dc649b7401b75e923c133f0c60e33ccd9c62c5ec7f5ce9464ed5
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service known for hosting malicious content. The primary redirector URL, 'https://ttraff.com/pify?keyword=when+we+dead+awaken+adrienne+rich+pdf', is designed to lure victims with seemingly legitimate content before redirecting them to potentially harmful sites. The presence of a large number of PDF links suggests a link farm or SEO poisoning tactic to improve search engine rankings for malicious content. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=when+we+dead+awaken+adrienne+rich+pdf In PDF document text
    • http://files.marbellacommunity.com/uploads/1/3/0/8/130874205/gokuwukagibawewu.pdfIn PDF document text
    • http://nafivul.ontoyouresale.com/uploads/1/3/2/8/132814930/gejipa.pdfIn PDF document text
    • http://files.uottawabgsa.ca/uploads/1/3/0/7/130739731/01b5713f100.pdfIn PDF document text
    • http://files.erichotz-portfolio.com/uploads/1/3/1/4/131483147/mivunov-pifaxupije.pdfIn PDF document text
    • http://kunosivas.farmtruckphotographyanddesign.com/uploads/1/3/1/4/131406082/vixilugifakelofoju.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/1/0449/2463/3243/files/lista_de_frases_mas_comunes_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/free_marbles_identification_and_price_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/an_inspector_calls_exam_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lunugituvalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9202/5249/files/41956055123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/jukinapupupirireb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/suwukolizixev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8089/3084/files/wajofidazuduroxelimufex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2200/7965/files/best_to_word_converter_nitro_cloud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7002/8966/files/fepidamav.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 8

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_off00006d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3F 5200 bytes
SHA-256: 6fbbd034f4ad7289cbb223087034ee66f424a94dfb8db587c92ff0013ca450d6
font_01_sfnt_off00007efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFB 9928 bytes
SHA-256: 8a56c5e0a0cc5bd7258280746e086bd58fdaaa2b21d8de63cd7a0f0a98c7d2cc

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