Malicious PDF — malware analysis report

Static analysis result for SHA-256 edaa8fd06f3e0dc1…

MALICIOUS

PDF

91.5 KB Created: 2020-11-20 14:30:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 38ed3c8ee3426ead1799e97d5ece7f91 SHA-1: adc92f3911816efc4c83da32a7bf700ece1f18ba SHA-256: edaa8fd06f3e0dc11bf9f46acf71d07c24f6f349bac5609f59127443b87ea76e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, and one prominent URL pointing to a potentially malicious domain. ClamAV detection as Pdf.Phishing.Trojan further supports a malicious classification. The document body, though heavily obfuscated, contains references to 'Birds of prey 2020 putlocker', suggesting a lure to pirated content or a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafffe.ru/123?utm_term=birds+of+prey+2020+putlocker PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388833/normal_5f91436b820d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472773/normal_5fa513edd6e0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_5fa60ebd75d15.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/nozalidujogive.pdfIn PDF document text
    • https://pudozewo.weebly.com/uploads/1/3/4/3/134311846/53a9dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f8e58f9c1ab6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462376/normal_5fa8d7ed937e8.pdfIn PDF document text
    • https://fupesovuzej.weebly.com/uploads/1/3/4/0/134016868/de917d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a1ae79-6231-4763-8a1c-3a9cfcdc27a0/natunigezemufetekufaboz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/079a315c-be9f-49dc-9b57-63cfd0deec01/14803607198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d4adb81-ca0f-4fac-8c2b-1552e22461b1/tyrones_unblocked_games_stick_rpg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deae1f21-6396-46ab-9e1e-8a198330cb04/www_ccrd_info.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88c5ff1d-6af7-40b1-a65b-211ca6cf344e/93118742415.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/20328494867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0354ab07-d6af-40bb-9102-1ddfb2cdffb2/epidemiology_definition_cdc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09565cbc-dea9-4e1d-a7ed-1a595602e5d5/chris_jericho_book.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8D 7100 bytes
SHA-256: 1d02e3930878ee3842153f4f44a6d3c3d3cc83f2f969ff6d08d9527cc8f0f46b
font_01_sfnt_off0000ecb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 5428 bytes
SHA-256: babee7f245be0d07d7c892e55c5dffd441934dd2e96a2f2e69225b09f3ccc783
font_02_sfnt_off0000ff4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4D 5728 bytes
SHA-256: 20e7cd31dc9a2e4a01eafc687c5c323f2f356a641a657b62e422368bd8084706
font_03_sfnt_off00011497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11497 11468 bytes
SHA-256: f0eda6a73b44c1bb6f5300a8b04b2e771a50ea5cd05c4aa16e4a9a6da0441a67
font_04_sfnt_off00013b84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B84 17660 bytes
SHA-256: 3da43a64224d1c849b51263a4ef836297873345dbb18fc123788c24c1b0af8e4
font_05_sfnt_off0001551e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1551E 2548 bytes
SHA-256: 6c37868a930957203f1cbf9037195de43c40f42f4169f0e686175682aff69969