Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c7dc080121e66f…

MALICIOUS

PDF

72.7 KB Created: 2021-03-18 22:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 560861deb2e8c3ffcbd9b5dd61035efb SHA-1: 25d68627c908821c5ecf2316a2f384831a874d5d SHA-256: c5c7dc080121e66f287b51d170a8e2046e443518f913d61846cd86a09620fd07
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple external URIs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though partially garbled, suggests a lure related to 'freemyapps hack apk android download', indicating a phishing attempt to trick users into downloading malicious applications. The presence of numerous links on disposable hosting further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=freemyapps+hack+apk+android+download PDF link annotation
    • http://dobofozepop.mygamesonline.org/10971981189.pdfIn PDF document text
    • http://zutolewe.mywebcommunity.org/64382771593.pdfIn PDF document text
    • https://zupakikaxabu.weebly.com/uploads/1/3/1/3/131380404/wanogigazasis-wuluga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375350/normal_5fff2604cffd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5ff3743541167.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465003/normal_5fdde92c475e2.pdfIn PDF document text
    • http://temilops.xyz/how_to_replace_mobile_home_furnacefa6k6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423136/normal_6046b2333fe12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453537/normal_5fe387dd3cfc1.pdfIn PDF document text
    • https://wevuviwujito.weebly.com/uploads/1/3/1/6/131636984/robejaritudi_pirejuto_temize_juxaduwoled.pdfIn PDF document text
    • http://neuroncraft.online/14761342071kjpl8.pdfIn PDF document text
    • http://proita.space/zawesesetuxaputiq4csd.pdfIn PDF document text
    • http://zhk-rekord.info/how_to_get_a_toned_stomach_and_bigger_bumgis0j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nijarigu.onlinewebshop.net/90457981601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c961f9c5-ca00-419f-869e-be3c9c02bc55/kisadifibotifunifatowazem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7375e6b0-6a70-49b7-b47f-22ad2ff365f5/raxododatixutixuzobaxamag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a35f9544-ce84-410d-89fc-eff76d6335e9/what_are_the_5_management_theories_for_organization.pdfIn PDF document text
    • http://dapekafuxururo.myartsonline.com/acupuntura_auricular_francesa.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 8

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_off0000db60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB60 5528 bytes
SHA-256: 6d81a84dc79306390de6da25b5f9d81b28f3c1a559b80dea43f60f392ed6c052
font_01_sfnt_off0000ee17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 12580 bytes
SHA-256: 44ac297f34cdaac73c7a3ea2ab035d23967f6b89df4945010f58094184301eb5

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