Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc96a3620bd41d3…

MALICIOUS

PDF

47.8 KB Created: 2020-10-27 09:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ec83b76a10d724070511f84f10201282 SHA-1: 53a9cf5e749b7eac8d6a18ba3b763ad942bc5c04 SHA-256: 6dc96a3620bd41d347ce4d3437bdfabb2553efa1e2d83f71d2d62a03af456d2b
114 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. It uses a callback-phone (TOAD) lure. 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 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ttraff.me/123?keyword=notice+of+parcel+on+hold+postcard+scam In PDF document text
    • https://sakuvajavabese.weebly.com/uploads/1/3/1/3/131383602/2643031.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/ce08f2bd9.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/wawiboramakewegaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386361/normal_5f8ef75979a26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5f8bf19c90043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f86fed978c71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_5f975e2b5299d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380540/normal_5f8c9a4fa1a54.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/1/0431/7016/8992/files/76578802258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7616/9109/files/one_step_equation_word_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2078/5068/files/could_not_initialize_class_com.android.sdklib.repository.androidsdkhandler_macos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8278/3166/files/hotpoint_washing_machine_7kg_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4793/5896/files/weather_station_model_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/69459422689.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/guzobusuwemuxasumog.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/create_booklet_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/pdf_bookmark_maker_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d479a9f4-9854-4ff4-8b83-01919c27995b/lego_marvel_superheroes_2_minikit_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79bf55bf-00b4-4f25-beb5-feb4da15b620/3065775521.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD6 5364 bytes
SHA-256: c172da822f746f097ea4691d7da88c7213c5795be8ebd485f581eceecf76dc4d
font_01_sfnt_off000081da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DA 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00008d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3E 10716 bytes
SHA-256: 37ca21d837930d78addb464a7e6c20bc48e2431ec14db729466b28a8186440cf

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