Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c77a9a8d74cd3af…

MALICIOUS

PDF

46.4 KB Created: 2020-11-06 07:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 80a46ea625a5630e0055f1836d2cf727 SHA-1: 4e66491babb5d89323ac39f99bb49baa14aa87a9 SHA-256: 5c77a9a8d74cd3afd7455b3d2299f2f3654b87443c9386be6a4a076f31e8d175
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://traffset.ru/123?keyword=kewalo+basin+harbor PDF link annotation
    • https://nabutamu.weebly.com/uploads/1/3/4/5/134525390/laxad.pdfIn PDF document text
    • https://latopilufazi.weebly.com/uploads/1/3/4/0/134017217/4078678.pdfIn PDF document text
    • https://manabaxijex.weebly.com/uploads/1/3/4/6/134626004/xifawiwi_falegunefusam_julurilejinugo_fasusikuguda.pdfIn PDF document text
    • https://tuxitusonodedin.weebly.com/uploads/1/3/0/8/130873989/togapomekufidow-rimozeb-nalizif.pdfIn PDF document text
    • https://nisewoji.weebly.com/uploads/1/3/4/2/134266574/resojuvum-kininop.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/0b27de187b4f706.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/zijeraxazelo.pdfIn PDF document text
    • https://narebojabow.weebly.com/uploads/1/3/4/2/134266185/d3b456.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/tadovu/ecology_of_actinomycetes.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/a4_size_paper_border_designs_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/crack_ielts_in_a_flash_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/filipino_abakada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58abecd3-86c1-4688-b426-83e7a9a78bef/laser_guide_rod_springfield.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/keyboard_alt_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/deming_high_school_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/obama_declared_emergencies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a16f933-17a6-4523-bdcf-1a9a592ff578/d_d_5e_throwing_weapons.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_off000069ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CE 4684 bytes
SHA-256: 1954749b7cee9065382bb93de09649abac7ce3d4a8daaf86e31293c997474e69
font_01_sfnt_off000079a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A6 10840 bytes
SHA-256: cfdf178ace4053acd54fbf6ae5528f8f190dd5e7202c663ad23684aa2cc51482
font_02_sfnt_off00009ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED7 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c