Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e6bb49bcb667e2…

MALICIOUS

PDF

59.4 KB Created: 2020-12-16 09:26:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e58994f3c62fe064a21a2d409655b8b7 SHA-1: 8c9e17d6a27fa7de645f71c17ac846ca140b4313 SHA-256: 97e6bb49bcb667e28bd4cabf6568a5650e834c4c222fb9e6d947031e0ceba2d7
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with at least one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong likelihood of malicious intent, aiming to direct users to harmful sites. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://traffine.ru/123?utm_term=dividing+rational+expressions+worksheet+answers+with+work In PDF document text
    • https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/0fe7feaa.pdfIn PDF document text
    • https://resuzomesidi.weebly.com/uploads/1/3/4/7/134746605/pusupiwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/220e1c89-ff89-4771-a7ac-dc8969b798e8/dadd_conference_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f3af1c8c741314320bf8/t/5fc19b002dd96f59182bb5cb/1606523649429/boxhead_more_rooms_de_2_jugadores.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b5bec30a162e0c519083/t/5fc20e821972c46e3ce5db5f/1606553221301/lekiwinosake.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64fc43398ff7515529cec/t/5fcefdb88b174454e994e382/1607400889001/my_little_sister_children_s_book.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe18a73485235c868d52f7/1606293671916/nomekiwaragugev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4c78139af037644e8c4/t/5fc1cda89ee0f32b87957a9e/1606536616722/the_wealthy_code.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aa6b5687f52b6b8c813a/t/5fd083142f29925fbb50c00c/1607500565311/dogukebixonifiweworinator.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc681d15e8e827d42b49382/t/5fd5ffd8d654060362bd1e5d/1607860185791/annelids_mod_apk_extra_weapons.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28199bda9c57a97c85960/t/5fc72f6956cd4459b3b38c65/1606889322115/contacts_icon_aesthetic_grey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b24618d7-0dc3-4300-9853-eae7ec88a885/fipadisol.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3486312facd59cebc5192/t/5fc37ca73485235c8633a5c6/1606646951621/c_virtual_member_call_in_constructor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c086bc-2ed4-48e5-ad3a-e0fb3812ca11/samsung_galaxy_s_pro_duos_b5512_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/473cd41a-e35c-4286-9db2-2d7ac4ffdc61/naxeletuvuxugexakajizaf.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_off0000adc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADC2 5504 bytes
SHA-256: 489d99140f22bba3583390ebfe42a77ef5d45f9cc01f3d22e40fd90096898484
font_01_sfnt_off0000c094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC094 9284 bytes
SHA-256: a2c29c3fd7f920460d47d03ea79ae2b99744b77ad07fc1b75b35304e4a2c0c63

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