Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb2e4ac06ab78fa…

MALICIOUS

PDF

69.2 KB Created: 2021-02-13 08:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: b942663b409aae5826316adfd9246abf SHA-1: 5cae842b3c9987ced283002f34890689805115e3 SHA-256: ebb2e4ac06ab78fad06fb52e5fa0694b19d8af07a40c8ff9fb16dda4b8ccea90
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, and it contains a significant number of external links, many of which point to potentially malicious or spam content. The document body, though heavily obfuscated, suggests a lure related to 'meal plan template reddit'. The presence of numerous PDF links, including one to 'all_star_cricket_2019.pdf', indicates a link farm strategy designed to drive traffic to various sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://leonvi.ru/aws?utm_term=meal+plan+template+reddit PDF link annotation
    • https://cdn.sqhk.co/moxelutedoje/hWhgvgc/ninja_foodi_tendercrisp_pressure_cooker_reviews.pdfIn PDF document text
    • http://monongzhlh.space/condom_3_songl1vvk.pdfIn PDF document text
    • https://lalupapetawosi.weebly.com/uploads/1/3/2/8/132816164/dotalumuwuza-wekagewalikuk-vikogenit.pdfIn PDF document text
    • https://cdn.sqhk.co/numiwufeguv/ifhshbB/51657526443.pdfIn PDF document text
    • http://rarurude.22web.org/anemia_falciforme_anomalia_genetica.pdfIn PDF document text
    • https://pasezarovatif.weebly.com/uploads/1/3/4/8/134858127/3fcefa9.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/jevelel/all_star_cricket_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/registration_form_for_us_visa_lottery.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/77729375047.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/sosedozefanatatawa.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/63002440345.pdfIn PDF document text
    • http://boxalage.epizy.com/66879469215.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/factorization_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/zubusunuzufa.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/sakhiye_casanova_song.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_off0000d26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26A 4932 bytes
SHA-256: 9b75240eab905ee1547364420833243ad0e5d29c3faf2d8583090b143beaa3ee
font_01_sfnt_off0000e324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE324 10692 bytes
SHA-256: b3964b832318852ad5d67a234afa3a43831a6e6634db1ba649687334505b934c

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