Malicious PDF — malware analysis report

Static analysis result for SHA-256 9108a2121604fd71…

MALICIOUS

PDF

71.8 KB Created: 2020-11-24 16:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e5ecbec5018d78373163aaacd0cd0b3c SHA-1: cf71f95bcb8270a2bf7710199423334fde87668f SHA-256: 9108a2121604fd712eae715038a878d0f1391a9d93d57ff8e83796d543d6cc93
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. The document body, though heavily obfuscated, contains text related to 'Fake gps location spoofer pro apk download', suggesting a lure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/123?utm_term=fake+gps+location+spoofer+pro+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_5f886137d8f5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f8c49eed2728.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/nice_word_that_start_with_the_letter_o.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/nafagivuzekakegoxuvebap.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/11697261753.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/95013402043.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/blood_and_guts_in_high_school_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/lavedapozoledusonape.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/42541850859.pdfIn PDF document text
    • https://s3.amazonaws.com/lodunixodetum/lagu_abiem_ngesti.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/eleanor_grey_brittainy_c_cherry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f05f888-cabc-4ce2-a709-28361575d6ec/nevupawu.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/indian_train_reservation_form.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D0 5432 bytes
SHA-256: 88991fb5f221108e4683a6b82762f1b17f24be2e12b9cb5c237e8da987978e11
font_01_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 10708 bytes
SHA-256: b76f728478e9a3c2009f0a0dd9f3727aa3bac3ad07d6778122e0ee47fba6aa12
font_02_sfnt_off0000fbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDC 16660 bytes
SHA-256: 71fe66e8a900eabe62c773f6b9b467243c87e6d484dd0ea34a22194082714177

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