Malicious PDF — malware analysis report

Static analysis result for SHA-256 119782ceca3a74e4…

MALICIOUS

PDF

75.4 KB Created: 2020-11-13 01:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 10bdfdb706c4167f69047c2b59cfed7d SHA-1: dd53b12754133fc7358e702ecdd3ebfb2859a57b SHA-256: 119782ceca3a74e40e37d5025db4abb503add8b7bc9005a60ac21d2eb44684ad
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of embedded links, with at least one pointing to known malicious redirector infrastructure. The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites. While no scripts were extracted, the PDF structure itself facilitates the attack by hosting numerous external links.

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://gettraff.ru/strik?utm_term=traeger+beef+brisket In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404738/normal_5fa246d56e383.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417983/normal_5fa36bb3ee056.pdfIn PDF document text
    • https://gafalevomunu.weebly.com/uploads/1/3/4/2/134235362/7204304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404107/normal_5f978275d3a17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403688/normal_5f943bac2a0ae.pdfIn PDF document text
    • https://sidusumidiwef.weebly.com/uploads/1/3/4/3/134366372/9549314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375357/normal_5fad37202240e.pdfIn PDF document text
    • https://razixolinatu.weebly.com/uploads/1/3/4/3/134384461/5c135c298.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/209ce14d-f0bc-49a0-906e-9210529b9517/wheel_of_fortune_food_and_drink_3_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db1ff828-bdd5-4bed-aa3f-fe402a835934/sinemififagasibamaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaf217d9-a5aa-4550-9c63-b942d1c8c1f9/5251467901.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80a2f47b-c6ed-4784-8925-fd739767f07c/nukiguwalipepozujopededo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb84d0c5-faa9-4e36-9c80-30495746d15a/11932740135.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_off0000d471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD471 5056 bytes
SHA-256: 2cffc050f631f2a653c33af752f3424ff3867069919432f3f3c3fc91e5f10933
font_01_sfnt_off0000e5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B6 10896 bytes
SHA-256: 83745e41071ead7a3cdc64de59fb745ce6cc590ceb6eefca63e8217c74a56793
font_02_sfnt_off00010ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB6 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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