Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ff6e06292300a5…

MALICIOUS

PDF

63.4 KB Created: 2020-11-18 20:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 04fd6d2b1c4ae0a98443deef6529d2bf SHA-1: bfb30bbabe350a1292adb1a445fe9b7cc7d57782 SHA-256: 95ff6e06292300a5cf458442d395b5bd6a627a610ccd88dda4b196a4691d2699
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to other PDFs, indicating a link farm or SEO spam campaign. The primary URL, 'https://trafftec.ru/123?utm_term=shrek+the+musical+vocal+score+pdf', suggests a lure to attract users searching for specific content. While no scripts were directly extracted, the PDF structure and extensive linking are indicative of malicious intent, likely to drive traffic or potentially lead to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://trafftec.ru/123?utm_term=shrek+the+musical+vocal+score+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420910/normal_5f97d70715b5d.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/sugixutada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449419/normal_5fa8eb2057de3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415537/normal_5fa5f6e742c29.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/rogugagatuf/samsung_dryer_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/ayurvedic_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1516417-917b-49ea-9158-994b2bb949bf/bloody_mary_recipe_v8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6f0a052-7ef3-4f94-873f-6330890a4939/lulawumusojifatusezifem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69d387ae-123b-468d-b59c-49561ffe3e8a/staff_manual_restaurant.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/samsung_remote_apk_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e677e9dd-44bc-4932-8e20-fa46439014fb/marvel_future_fight_beginner_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/cipd_factsheet_competence_and_competency_frameworks.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_off0000ade1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADE1 5400 bytes
SHA-256: be03d60c0c775336b427f61074fe7b8b94ee1c0a9ea90887d0eccd09214b2126
font_01_sfnt_off0000c03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC03E 10048 bytes
SHA-256: e76eeea3297061b0f39133d6e8f258800e9abb10a130b1b19755b8834555a501
font_02_sfnt_off0000e283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE283 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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