Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f47ee4d6f74650…

MALICIOUS

PDF

68.0 KB Created: 2021-03-14 05:57:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2d84e8f7bdce7ff87185a034bd8b779d SHA-1: 5b577a885b0ccbb3d998cd183857f0ec4435122e SHA-256: 49f47ee4d6f74650d1282660bc9b2a3a5c1023b94c4f926e4bfc556afa799d1b
194 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector, specifically designed to lure users with a fake manual title. The primary malicious URL identified is https://crophysi.ru/wix?keyword=clicker+garage+door+manual, which is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and the nature of the redirector suggest an attempt to deliver a malicious payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://crophysi.ru/wix?keyword=clicker+garage+door+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4481173/normal_602d5fbf39f9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388819/normal_601731f451766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_6022b49ad5fcd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481162/normal_5ffe20c77e8bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480905/normal_5fd3caff374da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wemofodi/sutenolulabafe.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/able2extract_converter_free_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/farezamijiwadolobeg.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/adm_apk_pro_cracked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29d681da-bf27-488f-bc2f-4deccdb75a62/stylish_fonts_keyboard_for_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6372376f-5d2f-4fb7-be79-d2aba8167caa/65166015244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db80d90a-b154-4024-9fcb-7e617264c909/26918098755.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/tactics_ogre_let_us_cling_together_psp_class_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/25888351061.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/freddie_mac_boarder_income_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/limusisukogo.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/65881982121.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/xuvipazupimipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b2c6c7-a5ca-4db4-a57d-ea7b84a27bb0/what_is_a_chinese_character.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb8f4eb5-ed37-4e30-a73f-352cc60d12eb/fomosajamiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/pikusomemovujaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/870eccfa-7cab-4dc2-8078-031493229e2b/76220485598.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/borland_delphi_5_professional.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_off0000cd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD82 5048 bytes
SHA-256: 23ae7257037f4c83f37dbde80660d9f233a6d51f787ee23271cc1132b3406021
font_01_sfnt_off0000de9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9B 10212 bytes
SHA-256: dab51c16e089a495f67c4362668edca7d4c031107ab87cc1c10d353853f5f246