Malicious PDF — malware analysis report

Static analysis result for SHA-256 a04bee9e1af98d88…

MALICIOUS

PDF

42.6 KB Created: 2020-10-28 04:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: dda3fd33be60b80b9bf5b8975315d079 SHA-1: 9bd7356445e1c6b8008d88026de3a7d240eaf4eb SHA-256: a04bee9e1af98d887d0a370ebbd15c303fb49f33d1a43dae296373472608e9c5
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?keyword=the+2+week+diet+book+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383450/normal_5f93288e97109.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387589/normal_5f90913f8a3fd.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/musub_noxevatug.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/4138109.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/kanibupopakuberasup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8956/7152/files/75443710689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4093/8410/files/pokemon_go_hack_gps_joystick_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/22258699480.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/84200969743.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/atresia_intestinal_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/ace_online_test_series_gate_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/vusozotudenagurogupibis.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/53489794282.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/makalah_angiospermae.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/20828495357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3920/7836/files/belling_e664_cooker_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3757/5326/files/19467683302.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_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 4992 bytes
SHA-256: 80f3201a3a61c2494bd1819d88ba2869da2170c46bb9ca8a960a7c5efc31828e
font_01_sfnt_off00007746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7746 11404 bytes
SHA-256: 78113abddc21ce13cf03e68a33e321f727e128bfe2bd0f3d652489b8a88b934d

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