Malicious PDF — malware analysis report

Static analysis result for SHA-256 45278d89d0332527…

MALICIOUS

PDF

44.1 KB Created: 2020-10-08 06:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 91111e007fa305bcdf53b8eeea9b9178 SHA-1: 2848d4101462be4ba07d4d2e4c3fea634eea43cc SHA-256: 45278d89d033252718f439cdff262d6dec557cf89b81ad1ee92251221b168d3c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on platforms like Strikingly and Shopify. One of these links, 'https://ttraff.cc/pify?keyword=verifone+taxi+meter+nyc', is flagged as a known malicious redirector. This suggests the document is part of a link farm designed to direct users to malicious sites, likely for phishing or malware distribution.

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://ttraff.cc/pify?keyword=verifone+taxi+meter+nyc In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f8fc942a-6c06-4fc0-9dee-e3762fa541ab/81139900125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96a27254-1c7a-44ab-b612-da345c7b7460/zokajonufivin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c1721c-79d0-4de6-80ac-fa4f6841c3d6/92229000546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8202/3073/files/abnormal_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8823/9510/files/square_of_binomial_worksheet_grade_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc84b038-fa30-4871-bdeb-6119e5a245ba/tunawojunuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d501873-000c-4c6f-9a38-6bc246d5943d/podebinibevififemadebege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0898d2e-0220-45a3-bece-013bd49162a2/dunawifepuworufosotawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7748bca-dc44-4646-af48-15624ca84727/fajuputalijelaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e396380-f921-4f94-b78d-75ac1c0ae47a/lefaxisalarujupesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab847d25-2a38-4dca-a911-c252d10a679f/51985754594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65152fa2-d1a2-48aa-bc18-18b480439b5e/38251942640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ec08d5b-c7ce-459c-92ac-ce1aae4f1978/62306961164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3b9637-da29-49ff-9366-67656f39ed88/31877586137.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BE 4740 bytes
SHA-256: d7850635a5d97d71315b5251e774c5d8d49c1da293d0886de9645c77dd6b8749
font_01_sfnt_off000071c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C0 10620 bytes
SHA-256: 3aee5d224f471ad78a949fa6d9d27de5eb06ac9cd13aef287568c09d6eff6a00
font_02_sfnt_off000095b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B5 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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