Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd0474d38cf4282…

MALICIOUS

PDF

41.2 KB Created: 2020-10-29 03:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f50351d15a9ae878375b93fe12f12cb4 SHA-1: 2bf99e63db72be98d5203db02ab80d9c2728433f SHA-256: 2bd0474d38cf42823824e8ab070afec0d6c9a95dbc7e3142d2e424d7c57b1c66
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is a strong indicator of malicious intent. The document body, though heavily obfuscated, contains the same phrase as the URL, suggesting a lure. The presence of numerous other PDF links, some pointing to benign content, indicates a potential link farm or a complex redirection scheme. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a phishing or scam attempt.

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.com/pify?keyword=every+good+boy+deserves+fudge In 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/c5226454-d66c-4e01-a937-51d10cf82bae/galavuzef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3989/9039/files/kijagujexikofoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/507e4a3a-c046-45d2-b30f-a8d1d5440dd1/43981231952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8281/8733/files/inventor_2020_ilogic_export.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ed20fac-9788-4b4b-8ea8-9eb8d17cb339/65108600423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5698/7799/files/sap_fico.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/todoveve.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/boeing_737_max_specifications.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/vugabuzit.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/articulos_de_hernia_discal_cervical.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c205c6e-dec9-414b-9896-f7eade6f8fb5/57089229399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9209/0784/files/18039223064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5440/8095/files/zipejitejelok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9716/3423/files/franchise_agreement_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1718/3654/files/nipapozufoxixuduridiwud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/fafegerobuzolepif.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/eduardo_galeano_los_nadies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/096091dd-4314-4f0d-9fb2-21a773c4a15b/baxatunizivotebulo.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_off000061ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61ED 5092 bytes
SHA-256: ae8bed5150293bcd5f1d60cde2cf4311c38632ab372d050ea120b4bd1868a6e7
font_01_sfnt_off00007364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 10628 bytes
SHA-256: 5d392474e7c18eca7bef3417356486231d114ae829fdd7bcece0b637070dd634

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