Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0806a258df01d74…

MALICIOUS

PDF

81.8 KB Created: 2021-02-12 04:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c6a4ab1f07ce72a199b03b2ee6c1f178 SHA-1: 2e6e46199fc5123ebfa985e5f845bcd95b563b7c SHA-256: f0806a258df01d746fe84518f787738e5f86abecf07e95d3a0f63d71f4130609
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, appears to reference 'Betty Crocker white cake mix baking instructions' and the file contains numerous external URIs, including one pointing to 'baarspo.ru'. This suggests a phishing or credential harvesting attempt, leveraging a seemingly innocuous lure to redirect users to a malicious site.

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 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://baarspo.ru/123?utm_term=betty+crocker+white+cake+mix+baking+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420903/normal_5fe78a9779e0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_5fe9555933047.pdfIn PDF document text
    • https://dutosagow.weebly.com/uploads/1/3/0/7/130775111/tajesejogik.pdfIn PDF document text
    • https://cdn.sqhk.co/nibubovixif/Xibggib/casino_slots_online_free_no_download.pdfIn PDF document text
    • https://badobokitevobux.weebly.com/uploads/1/3/0/9/130969603/53ff63dc097f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465000/normal_5fdab51d67334.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/aZhejiN/zijotugowojubisojezo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464314/normal_5ff461d23bb07.pdfIn PDF document text
    • https://giponijas.weebly.com/uploads/1/3/1/4/131453823/2073462.pdfIn PDF document text
    • http://driveformclanemilwaukee.com/current_carrying_capacity_of_14_awg_wirep88jz.pdfIn PDF document text
    • http://fulusixavopowem.iblogger.org/edittext_with_search_icon_android.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/jjKchdT/7329249497.pdfIn PDF document text
    • http://kengoru.space/un_jour_j_irai_sur_la_luneb81lf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464314/normal_5fee8e157bdac.pdfIn 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
    • http://roxonolabixatox.epizy.com/broad_crested_weir_lab_report.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_off0000f495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF495 5576 bytes
SHA-256: b6d8ef4f792260ef5c3e0bb2a85dcc633e36745c304468271005971bdd0355c8
font_01_sfnt_off00010789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10789 10468 bytes
SHA-256: 3c9d31ad82a3dadf591e6767ad18780675aee101925e6a70bd582b64173e36f0
font_02_sfnt_off00012b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B60 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.