Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c24da2164f39514…

MALICIOUS

PDF

42.3 KB Created: 2020-11-06 12:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 61f5c0b547eab7d7e1a345970b95688e SHA-1: 2eee12cf5f991275ec879657b301f4dad110dde4 SHA-256: 2c24da2164f39514bb362e21b96e9f14747ebc0c7493222eb36474fc5315f28c
76 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Logitech webcam image reversed' and embeds a URL that redirects to a suspicious domain. This pattern is indicative of a phishing or malware distribution attempt, likely delivered as a spearphishing attachment. The ML classifier strongly flagged this PDF as malicious, supporting the assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafficel.ru/aws?keyword=logitech+webcam+image+reversed PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374211/normal_5f88f0922628b.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/823f4b6937.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381544/normal_5f8ff2f18e433.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369631/normal_5f9871d07b304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409113/normal_5f9b6dd68f8d2.pdfIn PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/fabuwipazi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/38137041754.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b442a062-f0d9-4b24-ba67-2b640d8d5241/dudufali.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/gusejomavina.pdfIn PDF document text
    • https://s3.amazonaws.com/sezutuma/rotafexajafaxakofofixepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7937/3478/files/an_inspector_calls_revision_guide_edexcel.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/hotmail_sign_up_page.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a09a487d-eb74-4ad9-8d49-c4b44c21bd9c/go_math_grade_4_chapter_5_page_283.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/penderlea_school_calendar_2019_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ff8c691-a993-47da-98cd-9d83229f2463/jugabo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5880 5236 bytes
SHA-256: 32aad39d07f76b89a16091f2b0589444c0953c953dfbe801d93b591f876509d6
font_01_sfnt_off00006a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A66 10336 bytes
SHA-256: 6a38ddea171444ab657fb5b3468cf4beb35cb56153a79304139fa437541bfd3f
font_02_sfnt_off00008d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34