Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9ee5f7c118571d…

MALICIOUS

PDF

68.3 KB Created: 2021-03-25 16:17:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a9e6a6e982bdccf023ef649944e5fab0 SHA-1: 671a46a259bf5dfe477cd9e6fc63d56c8c9c3a99 SHA-256: 0d9ee5f7c118571dcf4065c3435c2d5bd9f92ab0f73a7d90038967b2ebd22e51
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/wix?keyword=rte+tv+guide+magazine PDF link annotation
    • https://jetujipizi.weebly.com/uploads/1/3/0/8/130813705/3697466.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/437153455952nlha.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402294/normal_60012ca7d007f.pdfIn PDF document text
    • https://magavesitike.weebly.com/uploads/1/3/4/5/134581553/a84e4abdd.pdfIn PDF document text
    • http://texno3ua.com/what_does_1020_mean_in_cb_talk2ln2v.pdfIn PDF document text
    • https://lomameleni.weebly.com/uploads/1/3/4/5/134597964/442f9af6a4e68.pdfIn PDF document text
    • https://nitipitu.weebly.com/uploads/1/3/0/7/130775162/lemiwijagebofu_degefenonoguxon_denuli.pdfIn PDF document text
    • https://tabutepapuwup.weebly.com/uploads/1/3/0/7/130740025/6883ecfcc18e3.pdfIn PDF document text
    • https://kosemezaped.weebly.com/uploads/1/3/4/7/134711049/ddd5c24f4a8.pdfIn PDF document text
    • https://fimibiwuru.weebly.com/uploads/1/3/2/6/132696060/meroral.pdfIn PDF document text
    • https://wepopoxewu.weebly.com/uploads/1/3/1/1/131164118/3310ecf26b.pdfIn PDF document text
    • https://wekosidofanepa.weebly.com/uploads/1/3/2/6/132696212/5983657.pdfIn PDF document text
    • http://instapriz.website/integration_of_esin2xcosxcos3xsinxdx7ckhm.pdfIn PDF document text
    • http://123dutch.com/lovelobovizamame3vauv.pdfIn PDF document text
    • http://arboozfilm.com/sears_craftsman_edger_carburetor3khj7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484365/normal_5ff4e2784717f.pdfIn PDF document text
    • http://fitokaps.xyz/fujifilm_finepix_s2940wm_price66zez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481852/normal_5ffd4afe5c540.pdfIn PDF document text
    • http://luminar4-download.xyz/power_rangers_jungle_fury_episode_7_sub_indo5hk0p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406501/normal_5ffc9e9db860e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_43323c17e32d4ed6862ffd9dc5c81f64.pdf?index=trueIn PDF document text
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_673d51925d5d470fb2c28c99c7394abf.pdf?index=trueIn 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_off0000ca15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA15 4956 bytes
SHA-256: 44ad78001e5babac35469d740779c61320feba32002e0c3eecc1d819dbcdee7c
font_01_sfnt_off0000daf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF6 11652 bytes
SHA-256: db24363d715cf3354208da8e515d84e62078750c40f7950d477a6bae773c1fd8

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