Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ce6aa37b40abf5…

MALICIOUS

PDF

73.2 KB Created: 2021-02-25 07:00:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 057a47c6e976612c91441b269b2b882f SHA-1: 855cab9544a7a2ed6dca4b6175de4d8f899f00bf SHA-256: 68ce6aa37b40abf5bc2b7957c31b23f56fe8becc463d91ca192e3d4a763e281d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=what+makes+an+ice+maker+stopped+making+ice In PDF document text
    • http://kawlites.online/433mhz_rx_tx_module_datasheetaz71y.pdfIn PDF document text
    • https://forupiwiwipugo.weebly.com/uploads/1/3/5/3/135349306/niguroreg.pdfIn PDF document text
    • https://cdn.sqhk.co/bevurokakug/iediiiC/mommy_twins_baby_kitty_hairdresser_beauty_salon.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/AiKjfii/beauty_routine_for_oily_face.pdfIn PDF document text
    • http://newyearshop.site/the_magicians_book_2j5req.pdfIn PDF document text
    • http://italy50wow.pro/avast_premier_2019_offline_setuphhxen.pdfIn PDF document text
    • https://mibajajezek.weebly.com/uploads/1/3/4/0/134017497/7782425.pdfIn PDF document text
    • http://jakor.pro/ost_film_hotel_del_lunar6hqc.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/hajdCwS/74921155839.pdfIn PDF document text
    • https://famonusowofem.weebly.com/uploads/1/3/4/3/134349488/rufajitej.pdfIn PDF document text
    • https://viwutexotopuj.weebly.com/uploads/1/3/4/5/134522905/4231790.pdfIn PDF document text
    • https://mipigonegomef.weebly.com/uploads/1/3/0/8/130813466/rejafuwigow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e1c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C9 5532 bytes
SHA-256: 4c9be047aab33b71556f437c03fde97066af894b260a3ceeb220fca7adbba1e6
font_01_sfnt_off0000f47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47A 10216 bytes
SHA-256: 1b3c2fdda72c062fb015c6ddcad49993d8627b8063f095cbedb4a0e5fddcfcbe