Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e715a0b78de576…

MALICIOUS

PDF

46.3 KB Created: 2020-10-29 13:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bf32a9edacd8d660109cea61971fcbde SHA-1: 1648696a6fdab0cb1531a8db1e554614a0b5714c SHA-256: 80e715a0b78de576b4ee6e735485b22744c34dcf639a7701a8a9381d8c02cca0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though partially garbled, contains text suggesting it is an assessment answer key, likely a lure. The embedded URL `https://ttraff.club/123?keyword=modern+world+history+chapter+8+assessment+answers` is the primary indicator of malicious intent, likely leading to a second-stage download or exploit.

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.
  • 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.
  • 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.club/123?keyword=modern+world+history+chapter+8+assessment+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379219/normal_5f9614d22d960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f961aee85b6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5f97531d059fb.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/1/0505/5460/1645/files/direito_administrativo_descomplicado_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/web_graphic_design_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/uric_acid_foods_to_avoid_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e18988a5-b417-424c-9862-089702c74b82/acting_one_robert_cohen_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91be029f-8760-4cc1-ba03-0a3e19179cfa/vapefed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e42b08a-28ec-437f-887f-ddf35945ac32/82668902469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c3c9f91-4459-474d-aa3a-842e6fa89bf3/tilikozajixeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd6691a0-0ab0-4e5e-9bed-4c41d11267c1/73826972451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/wogefotagerejudijiruri.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/76293210357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/169be155-24b0-4276-ba39-b2073ecc2891/52086605275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7133/9194/files/fetigidazorefaranafuwub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e514e2-2e0c-4d0d-a743-04c6821df601/44693616161.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/lusilodafurujewogenefarig.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/1193662777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a36d4c3-52fe-4394-9b0c-ac258c3c16bc/ge_pfe28kskss_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0ee227b-09e4-49e1-b189-8fc573acb78a/anais_anais_perfume_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/discord_bot_commands_code_list.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/40921523294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0160/8854/files/download_hm_app_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/mendels_pea_experiment.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_off00007377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7377 5708 bytes
SHA-256: aa1af9b4a4ff66f79c8933abab21a902026ce2a412ce6a47dc9b1bbfec5c2eb3
font_01_sfnt_off000086dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DC 10636 bytes
SHA-256: 36ce7a4bdc1f33c636ec60a8e8ff997217d1ac2b66551cae65808d1d90b63ea8

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