Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedb027afe33990a…

MALICIOUS

PDF

70.7 KB Created: 2021-01-14 01:05:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 87f376e5cd7ccc85f801513ccba738f6 SHA-1: b8aaa723026bf37ebe7ceebc9174f9e768dffe34 SHA-256: fedb027afe33990abc014df41c78e602b20d4c57e8686f4e397a34e585f1560b
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits malicious characteristics, primarily through the embedding of a large number of external links. One critical heuristic indicates these links point to known malicious redirector infrastructure, suggesting an attempt to lead users to phishing sites or download malware. The ML classifier and ClamAV detection further support its malicious nature. The document body, though heavily obfuscated, contains text related to 'Layers of the rainforest song' and authoring application details, which are likely decoys.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=layers+of+the+rainforest+song In PDF document text
    • https://cdn.sqhk.co/tagorotage/haggC6q/tumblr_girl_names_list.pdfIn PDF document text
    • https://xigokujote.weebly.com/uploads/1/3/4/6/134649591/damofoxitubu-pabigutexof-zopelotenakimuf-midemotepo.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/yhF3jfc/baby_blue_and_pink_ombre_nails.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/ggKrgnO/within_temptation_songs_ranked.pdfIn PDF document text
    • https://site-1178084.mozfiles.com/files/1178084/wesitexam.pdfIn PDF document text
    • https://cdn.sqhk.co/mozulunilex/j9Tic9a/gavivobejuw.pdfIn PDF document text
    • https://sasofotomedulel.weebly.com/uploads/1/3/4/2/134235056/5184944.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/sojenozap/kodibexoxosupoviwagujil.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/bittorrent_sync_synology_package.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/bv_raman_astrology_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/pediatric_community_acquired_pneumonia_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/sofobemowiwikuvatuvudopek.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/nigadoromodo.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/44021452732.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/lady_antebellum_need_you_now_free.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_off0000dba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA8 5040 bytes
SHA-256: 4478edc3d93d42c98cf99389b9a2e659893f0556553cd9618ef8df8f6278469c
font_01_sfnt_off0000ecd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD8 9688 bytes
SHA-256: 721666bd9b0c4805e40714a0bf351e8e4b12e14b6a84daa5c4f5309b75382632

Open this report in the interactive analyzer, or submit your own file for analysis.