Malicious PDF — malware analysis report

Static analysis result for SHA-256 f044948163b6233d…

MALICIOUS

PDF

41.5 KB Created: 2020-11-01 13:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e053adeebc844da422fe019575abf212 SHA-1: 2ab8d52bd5891c0aba2f5492a2b92e0b81448b24 SHA-256: f044948163b6233d07d74d0ec70da0e1fd15f5c8ec52d3a738571d377532d2e6
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a Jcpenney associate login, aiming to trick users into clicking it. It also exhibits characteristics of a password or recovery secret lure, suggesting an attempt to harvest credentials. The presence of numerous external PDF links, many pointing to benign content, indicates a link farm strategy to obscure the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?keyword=jcpenney+associate+jtime In PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/b9734a969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_5f8d8017f0810.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/mejores_libros_para_aprender_frances.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/zumukemobidakabat.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/45355048294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9980/7651/files/89608907837.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/74051012093.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/xalurizesiviguj.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/animal_farm_chapter_7.pdfIn PDF document text
    • https://s3.amazonaws.com/nujosuwemedadi/musatixemegaxuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3215/2744/files/14663112354.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/bolovuvebigesur.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/bindiff_download_free.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_off00006483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6483 5116 bytes
SHA-256: 89a81bfbf23715e17010a89009f1a860b24839666b2eca1d5dcbb2377560380b
font_01_sfnt_off000075f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 10512 bytes
SHA-256: a87dbac9bf36afe5c577b44947ca080cfe981009b0a00d51fa1039c1294dd755

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