Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a56e5a983ab6757…

MALICIOUS

PDF

76.7 KB Created: 2021-03-13 13:23:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6361aec381914b15c9ce0cec5ca92ab4 SHA-1: 1b9fe738663cf03c81b64bab28183aea6946f48b SHA-256: 9a56e5a983ab67575efcec783ce826e48e25a327fc8638b7d3c0986e44511bbb
116 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://xezojetit.ru/wix?keyword=strymon+blue+sky+manual', is directly embedded in the document. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or scam context, although the document body itself is heavily obfuscated and does not provide clear instructions. The presence of numerous external links, some of which are flagged as unknown or potentially malicious, indicates a likely attempt to redirect the user to malicious or scam-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xezojetit.ru/wix?keyword=strymon+blue+sky+manual PDF link annotation
    • http://help-feedback-amzn6.xyz/52728557474q68tt.pdfIn PDF document text
    • http://idealica-co.site/30844576447hnoih.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/favoki.pdfIn PDF document text
    • http://maykistore.ru/what_is_the_story_of_tokyo_ghoul_season_3f7os0.pdfIn PDF document text
    • http://jusapp.club/mi424wr_rev_fhy1bz.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/62078694101.pdfIn PDF document text
    • http://esparks.ru/bubututebaxahvacp.pdfIn PDF document text
    • http://steelsho1.club/dressmaker_sewing_machine_vintagejywct.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/hp_probook_6550b_battery_replacement.pdfIn PDF document text
    • http://kemytbok.xyz/jackson_json_tutorialyfzee.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/bopuxosavubare/new_bollywood_movie_2018_filmywap.pdfIn PDF document text
    • https://7e073981-ad1c-4081-8dc0-76946ba36063.filesusr.com/ugd/c4f63d_d6e3009185294c6abdff2514ef481272.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tobobowu/balance_sheet_p_l_format.pdfIn PDF document text
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_3b9072c2d55a40f59bcd9278b035e976.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zijivevip/sepapunapotexotujatumap.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/easy_balloon_animals_step_by_step.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/grade_12_university_chemistry_textbook_nelson.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/72393301541.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/pekudobamebiv.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/84686357345.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_off0000ebbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBF 5240 bytes
SHA-256: 50d08ada68ab38b6d1491116e9b571d1ea2ad021ac2c5e373cb112073d34366f
font_01_sfnt_off0000fd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7C 11440 bytes
SHA-256: 84e211321f5d04e66510c29264d8d9f50797616d34b0b73121ad2b2c28d82ed1

Open this report in the interactive analyzer, or submit your own file for analysis.