Malicious PDF — malware analysis report

Static analysis result for SHA-256 d266dae69278a224…

MALICIOUS

PDF

34.2 KB Created: 2020-10-10 18:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5408a6d0f6335c8de962982c3a2c882b SHA-1: c8b0c9ca47c65f8d4a26d5eecd7fd349e5b17971 SHA-256: d266dae69278a22417832723228d31eac2638456a8d646ba925320a82684ef94
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is likely used to obscure the final destination of the payload. The document body text, though heavily obfuscated, contains references to 'glencoe earth science workbook pdf', suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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://ttraff.me/pify?keyword=glencoe+earth+science+workbook+pdf In PDF document text
    • http://files.fxsilkscreen.com/uploads/1/3/1/0/131071145/2312163.pdfIn PDF document text
    • http://files.trevelle.com/uploads/1/3/1/3/131398242/makazalaz-toraz.pdfIn PDF document text
    • http://files.amaakarate.com/uploads/1/3/2/6/132680933/44cb43365f3df91.pdfIn PDF document text
    • http://files.noparameters.org/uploads/1/3/0/8/130814052/jevod.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/1/0439/3297/5272/files/torevevun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8060/4065/files/monster_legends_hack_apk_android_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed9ae72d-d1e6-4e6f-8f96-b401109846df/80434223747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebbc7a7f-46b2-4d42-8356-ccdd1ab195a2/84010610931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4649/8204/files/7812735014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2827/4585/files/hunger_games_parents_guide_imdb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3887/9143/files/the_things_they_carried_spin_answers.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_off0000467a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x467A 5572 bytes
SHA-256: 7a1f2b726f001e0f9f412fd54049aa8cf264eeb940b75490feca873163c9a5ce
font_01_sfnt_off0000596e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x596E 10216 bytes
SHA-256: b98c956f4f5c4f90860e616aa6557358fa5fa2ee7478adb893d721ef0dae081f