Malicious PDF — malware analysis report

Static analysis result for SHA-256 09da1e78b9bb3e8b…

MALICIOUS

PDF

85.2 KB Created: 2020-11-18 08:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3263359f109757663f85ecaf291feb9b SHA-1: e8da75c48f2968e5bb1a2fb25d931b52235bbe4a SHA-256: 09da1e78b9bb3e8b11180bc8a3eba6b9eab02c9d38d06423a3e8fb474f0a88a2
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, https://gettraff.ru/aws, is flagged as a known malicious redirector. This suggests the document's purpose is to direct users to malicious sites, likely for phishing or to serve further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=bharti+axa+life+insurance+company+profile+pdf
    • https://cdn-cms.f-static.net/uploads/4468551/normal_5fa79a94cf3f0.pdf
    • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/efa103.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/318d84c2-42bf-4d41-9f7c-3d8770e61699/86129633246.pdf
    • https://uploads.strikinglycdn.com/files/5d408f4b-7fc8-4f2a-9ad2-1546739c7bb8/xezitovuj.pdf
    • https://uploads.strikinglycdn.com/files/96e2c864-7482-4208-9afe-d4a582db2279/1731097422.pdf
    • https://s3.amazonaws.com/zakunafu/witchery_golden_chalk_brew.pdf
    • https://uploads.strikinglycdn.com/files/beebf474-ec8b-4687-b8e9-8cab597952b3/lines_police_cad_rp.pdf
    • https://uploads.strikinglycdn.com/files/a8ac8f8e-a774-4f89-a636-dc49a5b9fda6/alice_in_chains_torrent.pdf
    • https://s3.amazonaws.com/jezaxojipevu/erdas_imagine_tutorial.pdf
    • https://uploads.strikinglycdn.com/files/50857ff7-7cba-4db0-9a07-1e81f33a1f02/watch_carrie_2013_online_free.pdf
    • https://uploads.strikinglycdn.com/files/ba0a99eb-e5c8-483d-b764-764b933f3c93/42887692097.pdf
    • https://s3.amazonaws.com/xedewofuretujo/lawyers_ringgold_ga.pdf
    • https://s3.amazonaws.com/muwomapotumugi/mirakabiveti.pdf
    • https://uploads.strikinglycdn.com/files/8d0412e7-7ee4-467a-8ddb-025d0e5f1c23/chapter_7_chemistry_answer_key.pdf
    • https://s3.amazonaws.com/jofunoje/jafajujepuxozudaxajel.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102e6.bin
74b037bd9fc9506dcadb989be2d8ba93e2369ff7daac5c531ada68bb07c997c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102E6 5496 bytes
font_01_sfnt_off0001156f.bin
40415981faa9a754aceb8601726730461e566dafc7b958194643b9caef46570f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1156F 10516 bytes
font_02_sfnt_off00013958.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13958 4324 bytes

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