Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8b437a74c9ead1…

MALICIOUS

PDF

35.6 KB Created: 2020-11-08 11:52:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: bedda3be4e77f83454b250ba9cf843e1 SHA-1: 59d5d3e3bc6ee28d5a14bced3d1f19f9413db201 SHA-256: fe8b437a74c9ead1f81fa49f43c1c4ee4201939bb66e57208d6f49dd982fc91c
76 Risk Score

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/123?keyword=snail+bob+2+22 PDF link annotation
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/1623511.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/9038680.pdfIn PDF document text
    • https://kepelawurolunuz.weebly.com/uploads/1/3/4/0/134017158/6495362.pdfIn PDF document text
    • https://joleziravakejar.weebly.com/uploads/1/3/4/4/134460301/864b3a49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/280d5dde-1f09-474d-93ed-4816188bdacc/google_3d_map_app_for_android.pdfIn PDF document text
    • https://lofapaner.files.wordpress.com/2020/11/bill_of_lading_short_form_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d76f803-c7f7-44c4-ab36-525aac83d222/delta_band_saw_guide_blocks.pdfIn PDF document text
    • https://s3.amazonaws.com/mazugezijap/sword_art_online_episode_2_english_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/49089025683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50350712-e495-4444-9cbd-033e2fe5c0c2/distancia_maxima_entre_pilares_de_madera.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/4233583673.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/anti_human_trafficking_act_zambia.pdfIn PDF document text
    • https://s3.amazonaws.com/damevusom/76722810457.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/apkpure.com_madden_overdrive.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_off00004ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD2 4780 bytes
SHA-256: 13cb3e5ce6d83af3811bd73375a9280dc5c52bbdfe2985c57ba9d9503d3d2cad
font_01_sfnt_off00005b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B26 12284 bytes
SHA-256: bf4fe01d478d3c0446eb64895ccf83e3c3e4d6c3c22889140919596f1e3f34a2