Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7554316adb2966b…

MALICIOUS

PDF

71.5 KB Created: 2021-02-25 00:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1cd1c0cb722a122dbc6778a5c588905e SHA-1: 5c04e3b2639da715f7c9cbb8a3724d6247e9de55 SHA-256: d7554316adb2966bfe30ffa8e4b197879b37b472b271d15ece2966f47b355006
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=amsco+apush+multiple+choice+answers+2015 PDF link annotation
    • https://zelelifejoba.weebly.com/uploads/1/3/4/3/134321633/abf9992a5cba0.pdfIn PDF document text
    • http://itverys.space/vosuz9xwxs.pdfIn PDF document text
    • https://sexiguviwuzokal.weebly.com/uploads/1/3/4/6/134687255/texirixifu_nabafiraf.pdfIn PDF document text
    • https://kogafisefog.weebly.com/uploads/1/3/1/4/131438876/ruloguxasogajeriko.pdfIn PDF document text
    • http://ledimpress.biz/how_to_put_microsoft_mouse_in_pairing_modea5sgd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485152/normal_5fe40b0345a37.pdfIn PDF document text
    • http://topuniversityru.fun/fce_reading_and_use_of_english_parti62f8.pdfIn PDF document text
    • http://wivuperafuzo.mypressonline.com/95890131775.pdfIn PDF document text
    • http://websecurer.tech/51682474449sybl9.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/wogikokuzotaxa/4248787642.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/76350680384.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/53437405811.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_off0000d001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD001 5704 bytes
SHA-256: 8e6126e924c5a0d2139c0d8e2101ae5f066949e36053e8937e6f2194b98b01f5
font_01_sfnt_off0000e359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE359 14480 bytes
SHA-256: 7c5ed6b2a2bc83b4173b7a4da3a0d83b9175aec3e2bdb467a47e08d6b2d0cff1