Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e017e283673fd7…

MALICIOUS

PDF

89.3 KB Created: 2021-03-29 03:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3af2650291b15bbfe929664c6c5973e2 SHA-1: 7ee588405454ea5954ef2f473ef05a2a788d3626 SHA-256: 69e017e283673fd77142d2471d0e292f5239d83c2847a89648139a82875a6580
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to a link farm hosted on disposable domains, suggesting a tactic to manipulate search engine results or distribute malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/award?keyword=hindu+calendar+2020+pdf+july PDF link annotation
    • http://zivemigidefis.mypressonline.com/osaka_rail_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405181/normal_6046c1384af01.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/the_holy_quran_transliteration_in_roman_script_with_arabic_text_and_english_translation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408589/normal_6015ffeeaddda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379385/normal_5ff7954964008.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450141/normal_5fff7478c0614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_604afbc6b7c92.pdfIn PDF document text
    • http://wepisoja.mypressonline.com/ronovexupudubaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470017/normal_5fce632a45ec5.pdfIn PDF document text
    • http://bisewilorilamej.sportsontheweb.net/11882758751.pdfIn PDF document text
    • http://reveruverof.medianewsonline.com/zojazefobajonusizopon.pdfIn PDF document text
    • http://wanididezaj.getenjoyment.net/statistical_tests_kanji.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/acer_aspire_e15_battery_price_in_bangladesh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_6027344e96375.pdfIn PDF document text
    • http://xejepurefe.scienceontheweb.net/tombow_lettering_practice_worksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422371/normal_6060baf781e1e.pdfIn PDF document text
    • http://pifafixejizigu.scienceontheweb.net/imperative_sentence_exercise.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425910/normal_605c5c3b01a38.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/31126367225.pdfIn PDF document text
    • http://goduvide.22web.org/56051102945.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dufojamimusim.atwebpages.com/stock_market_closed_good_friday_2020.pdfIn PDF document text
    • http://rekadifaleroj.rf.gd/nubumixujadefofaduja.pdfIn PDF document text
    • http://xugivikiseb.rf.gd/27894169427.pdfIn PDF document text
    • http://nudagimanefej.atwebpages.com/harga_frappuccino_starbucks.pdfIn PDF document text
    • http://sejojoxo.epizy.com/udemy_paid_courses_free_2019.pdfIn PDF document text
    • http://fepetixapokurob.myartsonline.com/56969887807.pdfIn PDF document text
    • http://sunuwib.epizy.com/5_paragraph_operations_order_marine_corps.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/anastasis_chords.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_off00011e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E51 5384 bytes
SHA-256: c3b39947637656b469b2a24d7cbadc0133b82653199159511cd4b2f9ff067367
font_01_sfnt_off000130be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130BE 11392 bytes
SHA-256: fe46b656db47f993700f02fcf60eb23ed59d0a1e0f86fc0374b568b667321be2