Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa5805e0053af218…

MALICIOUS

PDF

53.3 KB Created: 2020-10-29 08:55:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d7a489362c41eb6c8f886dba45f4b2f0 SHA-1: 3d15fed4720f6ee2e7df5387c225f26cfb70f56b SHA-256: aa5805e0053af2186d6b04258ec9618a8410d9c4c51bd2380fa1c528193eeb17
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, indicating a potential SEO poisoning or spamming campaign. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=thank+you+ma%2527am+comprehension+questions+answer+key In PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/f57d1.pdfIn PDF document text
    • https://silemixijotin.weebly.com/uploads/1/3/4/4/134463531/bonojiso-pemoten.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f96705445273.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/2270131.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_5f97f955c1525.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f872269d17e3.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/1893061.pdfIn PDF document text
    • https://kifelulamexeb.weebly.com/uploads/1/3/4/3/134310841/8f3a6.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/1/0432/8810/1030/files/sutix.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/vasukokojamej.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/32018355971.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/psychology_class_11_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/zombicide_angry_neighbors.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/basic_english_usage_edicion_espaola.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/33499500654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0700/2784/files/best_basic_notepad_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4372/0868/files/13923475679.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/angels_in_america_tony_kushner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2644/7525/files/stanislaus_county_sheriffs_department_swat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/firefox_focus_review_android.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B9 5508 bytes
SHA-256: 2b93378e23cd2112e79470f1730b3e023689d1ccd86a7b217b1bb52588c26f68
font_01_sfnt_off0000a66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA66F 9824 bytes
SHA-256: 8922defaa3f7e54c1754b14f448ccf2fdcc59c96c72ebf0a5bfb07438ce511e6

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