Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d773888721feaf…

MALICIOUS

PDF

37.9 KB Created: 2020-08-27 22:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e2c7e7d4d471c2192af0dde3597ea13 SHA-1: e0e793ac87fabe01fb3ff962e318b540c11b4713 SHA-256: 09d773888721feafa7a9dd1f739f3f5869ec6ad92f8ce547ac3e7fc1ecb2bc22
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The document body and heuristics suggest a lure for a free PDF book, which ultimately directs users to the malicious URL 'https://ttraff.cc/pify?keyword=de+cero+a+uno+libro+pdf'. This pattern is consistent with phishing or malware distribution campaigns.

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=de+cero+a+uno+libro+pdf In PDF document text
    • http://pazag.yogadkan.com/uploads/1/3/2/8/132816165/4362784.pdfIn PDF document text
    • http://wajexuge.iantheresaswonderfullife.com/uploads/1/3/1/4/131438268/zegogavizeba.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/1/0431/4539/6384/files/mixidif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/dilupubiwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1935/2740/files/mitos_sobre_el_alcoholismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/agreement_on_safeguards_wto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5118/8130/files/social_issues_and_the_environment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/26720033002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/apj_abdul_kalam_speech_on_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/gegetivujusurom.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 1

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_off00004a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A11 4912 bytes
SHA-256: 2cade8ca7e5e62be886bd6f518885b3d84773d4e3d755212cf02c855033487e0
font_01_sfnt_off00005abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABD 10708 bytes
SHA-256: 75d5a44a83380aea0b05aef36631e503f926bd6d4fb359fc64736fdd1040d6e3
font_02_sfnt_off00007d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D12 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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