Malicious PDF — malware analysis report

Static analysis result for SHA-256 64eac92f556d849a…

MALICIOUS

PDF

39.3 KB Created: 2020-08-23 14:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd1221513e2695973b301675821a1203 SHA-1: fae6e160ca662e28018622a162a202f36ab3d75c SHA-256: 64eac92f556d849afdc0cb8e50dfa48c192813316ee95faa0a0b6f0432ef1e64
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector pointing to a URL designed to mimic a software download. This is further supported by heuristics indicating a malicious redirector and an SEO link farm, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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=whatsapp+messenger+for+windows+7+ultimate In PDF document text
    • http://mimiwa.rebuildhopekansas.org/uploads/1/3/1/3/131380005/3f3ac2.pdfIn PDF document text
    • http://files.woodland50pta.com/uploads/1/3/0/9/130970016/de3dabb06fb9f.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/1/0431/0515/7282/files/roman_mythology_trivia_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/whatsapp_app_free_for_windows_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/history_of_arabic_language_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/chinese_drama_the_eternal_love_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4147/0117/files/sophisticated_lady_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/fuzojuzizapegomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/affect_vs_effect_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/calamity_abyss_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/rupibom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2385/8845/files/vilefonakifakugigebotevob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/94085656994.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB0 5640 bytes
SHA-256: decd84c9a695570306571868596038ad68bc414e3c2efd31c0c3235ceec2bfb1
font_01_sfnt_off00006ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED7 9784 bytes
SHA-256: f5f8fb78131ea924a3319824a6f81c61aa7c044b8141aca5e2135edd827e754a

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