Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4c4fa7a627b49ac…

MALICIOUS

PDF

43.6 KB Created: 2020-08-09 05:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73109a76dd5ebb2539dfec58285e117f SHA-1: 2dfa769c4ad27a6e7340f0ef5bfd773cecbf91ec SHA-256: c4c4fa7a627b49ac40da5f2c700020a5c17313262c38bd4951441686590b60f1
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary URL, https://ttraff.com/pify?keyword=ejemplo+de+texto+argumentativo+sobre+las+drogas+pdf, suggests a lure related to drug-related argumentative text, likely a pretext for a phishing or malware distribution attempt. The presence of many links hosted on Shopify indicates a large-scale operation to distribute 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.com/pify?keyword=ejemplo+de+texto+argumentativo+sobre+las+drogas+pdf In PDF document text
    • http://files.limosofcocoabeach.com/uploads/1/3/2/6/132681880/7620109.pdfIn PDF document text
    • http://files.crescentbaydollfanciers.com/uploads/1/3/0/7/130775490/jilobikito.pdfIn PDF document text
    • http://files.kofcstarofthesea.com/uploads/1/3/1/3/131379594/dawujatotodusinitif.pdfIn PDF document text
    • http://duliret.downeastchristianchurch.com/uploads/1/3/0/7/130740522/masibubozomab-moliderek.pdfIn PDF document text
    • http://files.ewiechart.com/uploads/1/3/2/3/132302913/gomokiwu-dapewijutufose-jofumuvusu.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/1/0436/8033/3989/files/ziterexaxomurujaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/majorgeeks_malware_bytes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/vofiravusuwojekukiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2293/4435/files/54460999822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/mukinapumituv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6023/0294/files/piano_songs_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1452/6872/files/19948151078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/validity_and_reliability_of_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/serijuleba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/89136274488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/69515163470.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_off00006a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A02 5660 bytes
SHA-256: 5de3086c4efe1433ec8bbc4102aabba6e7eea75685a3c07ad1e07cc2c6bcdebd
font_01_sfnt_off00007d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D35 10548 bytes
SHA-256: 5335bec4cdf55bc8d1893c6d9250224dbac792250fff033c15ceeb51863f7355

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