Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf95244b1460106…

MALICIOUS

PDF

63.5 KB Created: 2020-10-02 02:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f50e5c4ebd06deff0f82929a40e2f8a7 SHA-1: 72d06cc1cedb56be4efbaf0ec026ff1bbd0d2970 SHA-256: ecf95244b14601066e10ee95d5ed4f568857eb1370255e5a2ece6b378f0f3a4f
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically a URL related to 'maersk bill of lading'. The document body, though heavily obfuscated, also contains a similar URL. The presence of a large number of external PDF links, many of which are numeric slugs, suggests a link farm designed to host malicious content or redirect users. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/strik?keyword=maersk+bill+of+lading In PDF document text
    • http://files.missingpersonsrv.com/uploads/1/3/1/4/131406535/7738403.pdfIn PDF document text
    • http://files.glasskiteanthology.com/uploads/1/3/1/3/131384401/4859110.pdfIn PDF document text
    • http://dizixa.rietvalleigesinskerk.org/uploads/1/3/2/8/132814930/1669836.pdfIn PDF document text
    • http://rodivam.meridianpublications.com/uploads/1/3/0/7/130776246/3253543.pdfIn PDF document text
    • http://teleki.bedfordbiblechurch.com/uploads/1/3/1/8/131857252/ea8b0.pdfIn PDF document text
    • http://files.cybercesspool.com/uploads/1/3/0/9/130969034/2172792.pdfIn PDF document text
    • http://vusonox.bronxbrooklynqueenshalls.com/uploads/1/3/1/8/131871768/jijino.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/5f6a1370-716c-47af-b006-898a7593c4ea/8344182504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/4946/1415/files/44403185780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/mr-jatt.com_top_20_songs_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4528/8093/files/golds_gym_xr60_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/adt_key_fob_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8515/1897/files/dazepiwajasorolo.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_off0000bc6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6A 5284 bytes
SHA-256: b14e4811ca1923af95042d5feda65bc3b8939ac44269302236f7520e7969718a
font_01_sfnt_off0000ce7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7D 10340 bytes
SHA-256: edbbce0c0c4cca57479b241bb31ecd4a60c3e47a900afc3c8cb99dd4d2663622

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